log√2-1^3+√2 Tick 2-1 is the bottom 3 +. Tick 2 is the top

log√2-1^3+√2 Tick 2-1 is the bottom 3 +. Tick 2 is the top

-2
3+√2=(√2+1)^2
The reciprocal of √ 2-1 is √ 2 + 1
So it's - 2

A quadratic function whose {4ac minus bsquare / 4A] = b-square minus 4ac / 2A after 50 times expansion. Find the analytic expression of this function

(4ac-b^2)/(4a)=50*(b^2-4ac)/(2a)
B ^ 2-4ac = 0, so: F (x) = 0 is double root
Then: F (x) = a (x + (B / 2a)) ^ 2

How to solve the problem of fraction quickly
Every time I do a question about fraction, I always dally. It's not only slow, but also not accurate,
It's not any other way. Besides more practice, is there any other shortcut?

The most important thing in mathematics is to extract the missed questions in the wrong questions book. Many of the top students in the college entrance examination are prepared by the wrong questions from junior high school to senior high school``~
So you should practice more, and don't lose heart even if you are wrong~

How to read "Bian" in pinyin? B-i-an or b-ian?

b-i-an
The method of three pronunciations is to analyze a syllable with a preposition into three parts: sound, preposition and rhyme
That is: b-i-an → Bian

How to distinguish the focus position of hyperbola in high school mathematics
Why can we judge the position by sign? I can't understand the process of the teacher's derivation

Hehe, there is a definition of hyperbola that can be deduced. Just remember that the focus of hyperbola is on that axis, and the coefficient in the equation is positive. The denominator in the elliptic equation is large, and the focus is on that axis

Sixth grade mathematics first volume percentage application of all explain a good

A transport team transported a batch of goods, the first day, transported all 20%, the first day and the second day's volume ratio is 3:2, there are 520 tons left, how many tons of this batch of goods? 2

Given: - 1 / A * ln (1-A) = 2, find a =?

A = 0, ln (1-A) = - 2A
Draw a diagram
There is also a termination of 0.8

The problem of revolving surface in Advanced Mathematics: (x / 2) = y = - (Z-1) revolving around x-axis

Let a (x1, Y1, z1) be any point on X / 2 = y = - (Z-1), and its symmetric point about X axis is a '(x, y, z). It is easy to know that: x = x1, Y1 = (x1) / 2, Z1 = 1 - (x1) / 2, y + Z = Y1 + Z1 → 2 (y + Z) = x - 2x + 2. Therefore, the equation of the surface of revolution is 2 (y + Z) = x - 2x + 2

What is the mixed operation of four fractions?

First multiply and divide, then add and subtract, first calculate the inner surface of brackets, and then calculate the outer surface of brackets
Same as (integer) algorithm
Four operations refer to the operations in which the first level operation (addition and subtraction) and the second level operation (multiplication and division) appear in one formula at the same time
Four refer to the calculation rules of addition, subtraction, multiplication and division
A formula of four arithmetic operations does not need to have four kinds of operation symbols. Generally speaking, it refers to the operation of combining the majority into one number by two or more operation symbols and brackets. In the mixed operation, the brackets are calculated first, from small to large, and then from high to low

lg2*lg2+lg50*lg2+lg25=?
xiexie!

lg2*lg2+lg50*lg2+lg25
=lg2(lg2+lg50)+lg25
=lg2(lg100)+lg25
=2lg2+lg25
=lg4+lg25
=lg100
=2