Factorization factor: X2Y + 2XY + y=______ ．

Factorization factor: X2Y + 2XY + y=______ ．

The original formula is y (x2 + 2x + 1) = y (x + 1) 2, so the answer is y (x + 1) 2

There is a round flower bed in the park. Inside is a rose bed with a diameter of 10 meters. Outside the rose is a tulip flower with a width of 4 meters. What is the area of tulip

Is to find the area of the ring
Radius of small circle = 10 △ 2 = 5 (m)
Big circle radius = 5 + 4 = 9 (m)
Tulip area = 3.14 × (9 & # 178; - 5 & # 178;) = 175.84 (M2)

My grandfather's garden covers an area of about three fifths of an hectare, of which one fourth is rose, two fifths jasmine, and the rest tulip. How much tulip?
My grandfather's garden covers an area of about three fifths of an hectare, of which one fourth is rose, two fifths jasmine and the rest tulips. What's the percentage of tulips? The teacher said the answer is seven out of twenty. What's the formula?

1-1/4-2/5=7/20

Li Bai walked on the street with nothing to do. He picked up a pot and went to buy wine. When he met the shop, he doubled it. When he saw the flower, he drank a bucket (the bucket was an ancient vessel). When the shop and Hua finished drinking the wine in the pot, he asked how many buckets there were in the pot?

Suppose the original wine x Dou, he meets the shop three times and sees flowers three times at the same time. After the first meeting, the wine is 2x-1; after the second meeting, the wine is 2 (2x-1) - 1; after the third meeting, the wine is 2 [2 (2x-1) - 1] - 1 = 0; solving this equation, we get x = 78 (Dou). A: how much wine is there in the wine pot

The elementary dichotomy equation (x + 1) / (X-2) + 1 / (x + 1) = 1 is solved
Solution: remove the denominator to get (x + 1) square + X-2 = 1
X squared - x = 2
x(x-1)=2
(I won't solve it when I get to this point, so I guess x = 2, but I want to solve the process. Thank you.)

You're wrong. If you go to the denominator, you get 4x = - 1, x = - 1 / 4
You don't multiply (x + 1) × (X-2) on the right side of the equation

Twelve fifths divided by brackets, one sixth minus one fourth plus two thirds, death divided by minus eight

Twelve fifths divided by brackets, one sixth minus one fourth plus two thirds, death divided by minus eight
=12/5÷(1/6-1/4+2/3)÷(-8)
=(12/5)÷(2/12-3/12+8/12)÷(-8)
=(12/5)÷(7/12)÷(-8)
=(12/5)×(12/7)×(-1/8)
=-18/35;
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When the integer k equals, the equation 9x-3 = KX + 14 about X has a positive integer solution

Conversion equation
x=17/（9-k）
X is an integer, so 17 has to be divisible by 9-k
Because 17 is prime, it can only be divided by plus or minus 1 and plus or minus 17
If the problem requires a positive integer solution, then 9-k can only be equal to 1 or 17
Then k = 8 or - 8

If the greatest common factor of the two numbers is 12 and the least common multiple is 96, then the two numbers may be (12) and (96), or () and (). What should be filled in the brackets
What's in brackets?

Let these two numbers be x, y, x = 12a, y = 12b, 12ab = 96, ab = 8, and a and B are coprime, so only a and B are 1 and 8; nothing is possible

It is proved that y = x & # 178; is an increasing function on (0, + ∞)

Suppose X1 > X2, and x1x2 belongs to this range, so x1-x2 > 0
Just prove that Y1 > Y2, y1-y2 = the square of X1 - the square of x2 = (x1 + x2) (x1-x2) > 0, two positive numbers want to multiply greater than 0

If 1 = 5,2 = 6,3 = 7,4 = 8,5 is equal to?

5 should be 9
is it?