In the equal ratio sequence an, let Sn be the sum of its first n terms. If S3 = - 3s2, then the common ratio Q of an is equal to

In the equal ratio sequence an, let Sn be the sum of its first n terms. If S3 = - 3s2, then the common ratio Q of an is equal to

Because the formula SN-S (n-1) = an, so s3-s2 = A3, so - 4s2 = A3, all with - 4 (a1 + A2) = A3 and because this is an equal ratio sequence! So the square of A2 = A1 multiplied by A3 can be solved! Alas, the mobile phone steps are so slow!

Given that x + 1 / x = - 2, find the value of the root sign of (x-1 / x) &# 178; + 4

Solution
solution
x+1/x=-2
The square of both sides is as follows:
(x+1/x)²=4
√ (x-1 / x) ² + 4 -- this one?
=√(x+1/x)²
=√(-2)²
=2

What are the two categories of uncountable nouns?

Material nouns and abstract nouns
Uncountable nouns can be divided into material nouns (meaning the matter that cannot be divided into individuals, such as meat, rice, water, milk, orange, etc.) and abstract nouns (representing abstract concepts such as action, state, situation, quality, such as work, home, time, health, friendship, etc.)

y=(1*3)^│x+1+│x-2││
The increasing interval is ▁▁▁▁▁▁, and the decreasing interval is ▁▁▁▁▁▁

Increasing interval is an empty set, decreasing interval is [2, positive infinity]

Seven eighths of a meter is as long as one eighth of a seven meter
Seven eighths of a meter is as long as one eighth of a seven meter?

That's right
1m X7 / 8 = 7m X1 / 8
I hope I can help you,

For advertising English text translation!

Adjective: advertising, advertising industry
Nouns: advertising; advertising, advertising; advertising
Verb: to announce; to announce Advertising (advertising form)

15,12,18 pairs of least common multiple

12=2*2*3
15=3*5
18=2*3*3
180=2*2*3*3*5
So the least common multiple is 180

It is known that the binary linear equation 2x plus y is equal to 3. If y is expressed by the formula of X, then y=

3-2x

Sea water I ask you, why are you so blue? &The sea laughs and says, "heaven is in my arms." &I ask you, why are you so salty? &The sea laughs and says:____                       。 How many questions did I ask the sea? &The & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp 3. & nbsp; Can you answer the second question for me?                                                            &Nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; 4. &The sea water, seawater, seawater, seawater, seawater, seawater, seawater, seawater, seawater, seawater, I ask you, and & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & & nbsp; & nbsp; & nbsp? &The sea water, the sea water, the sea water, and the sea water, the sea water, is laughing and saying: "the & nbsp & nbsp; the & nbsp;" "& nbsp; the & nbsp; & nbsp; the & nbsp; & nbsp; & nbsp; the & nbsp; & nbsp; the ocean ocean, the sea water, the sea water, the ocean water is laughing, and the ocean ocean is laughing as the ocean ocean is laughing, and the & nbsp; & nbsp; & nbsp & nbsp; & nbsp & nbsp; & nbsp & nbsp; & nbsp & nbsp; & nbsp & nbsp; & nbsp & nbsp & nbsp; & nbsp & nbsp & nbsp & nbsp & nbsp; & & nbsp & nbsp; & & nbsp; & & nbsp & nbsp & nbsp & nbsp; & & nbsp & nbsp & nbsp; & & nbsp; & & nbsp & nbsp; & nbsp & & nbsp; & & nbsp; & & nbsp; & & nbsp; & & nbsp; & & nbsp; & & nbsp; & & nbsp; & & nbsp; & & nbsp; & & nbsp; & & nbsp; & & nbsp; & & nbsp; & & nbsp; & & nbsp; & & nbsp; & & nbsp; & & nbsp; & & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp;"

The real number a satisfies the real number a (a + a = 0, and a ≠ - 1, or a < 0, and a ≠ - 1, and a ≠ - 1, when a = 0, when a = 0, the substitution of ???124124124124\124124124124124\124124124124\124\\\\\\124124\\124124124124124\\\\\\\\\\124124124whena ＜ - 1, the original formula = 1

A feeding factory raised 60 chickens and ducks. Later, it sold 1 / 5 of the chickens and bought back 12 ducks. At this time, the number of chickens and ducks was exactly the same?
fast

There are 40 chickens, 1 / 5 is 8, 40-8 = 32
20 ducks, + 12 = 32