The solution of equation 25x-x & # 178; = 0 is

25x-x²=0
x(25-x)=0
X = 0 or x = 25

The solution of the equation x & # 178; - 25X = 0 is

x²-25x=0
x（x-25)=0
X = 25 and x = 0

What is the quotient of subtracting the product of three and two fifths and two fifths and dividing it by three and three fifths?
Also: two thirds of 9.6 is 1.8 more than 50% of a number. What's the number?

1. (6-3 and 2 / 5 × 2 / 3) △ 3 and 3 / 5
=(6-2 and 4 / 15) △ 3 and 3 / 5
=3 and 11 / 15 △ 3 and 3 / 5
=1 and 1 / 27
2、（9.6×2/3-1.8）÷50%
=（6.4-1.8）÷50%
=4.6÷50%
=9.2

If the quadratic trinomial x * 2 + KX + 5k-25 is a complete square of X, then k =?

Then it can be written as (x + P) ^ 2, so there is x ^ 2 + 2px + P ^ 2 = x ^ 2 + KX + K + 3 2p=k ① …… So, k = 6 or - 2

3, 6, 7, 9 is 36?
36!

For example, 3 + (7-6) × 9 = 36

It is known that the difference between the polynomials x2 + ax-y + B and bx2-3x + 6y-3 has nothing to do with the value of the letter X. the value of the algebraic formula 3 (a2-2ab-b2) - (4a2 + AB + B2) is obtained

∵ the difference between the polynomials x2 + ax-y + B and bx2-3x + 6y-3 has nothing to do with the value of the letter X, (x2 + ax-y + b) - (bx2-3x + 6y-3) = x2 + ax-y + b-bx2 + 3x-6y + 3 = (1-B) x2 + (a + 3) x-7y + B + 3  1-B = 0, a + 3 = 0, a = - 3, B = 1, then the original formula = (3a2-6ab-3b2) - (4a2 + AB + B

How much is 2 minus 5 and 3? Find the process

7 out of 5

25X & # 178; - 10x + 1 factorization

Original formula = (5x-1) (5x-1)

How easy is it to multiply 1 / 9 by 101 minus 1 / 9 divided by 1 / 2
19 divided by 1 / 5 plus 3 / 4 and multiplied by 5 / 6
11 out of 42 plus 4 out of 5 times 5 out of 12 plus 4 out of 7
17 out of 8 times 4 out of 9 divided by 1 minus 1 out of 6
We must simplify the calculation
What can be calculated simply should be calculated simply!

1 / 9 × 101-1 / 9 / 2 = 1 / 9 (101-2) = 1 / 9 × 99 = 1119 divided by 1 / 5 plus 3 / 4 and multiplied by 5 / 6 = 19 △ (1 / 5 + 3 / 4) × 5 / 6 = 19 × 20 / 19 × 5 / 6 = 100 / 6 = 50 / 3 (or 16 and 2 / 3) 11 / 42 plus 4 / 5 times 5 / 12 plus 4 / 7 = 11 / 42 + 4 / 5

A 6-meter-long rectangular timber is sawed into three sections on average, and the surface area is just increased by 48 square decimeters. What is the volume of this timber section

Hanying warm for you
48 △ 4 = 12 square decimeters
12 square decimeter = 0.12 square meter
0.12 × 6 = 0.72 M3
Its volume is 0.72 cubic meters
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The solution of equation 25x-x & # 178; = 0 is