Solving equation x-25% = 36 fast

Solving equation x-25% = 36 fast

25%=0.25 X=36+0.25 X=36.25

(25 + 25 * x) * (1 + x) = 36 solutions

25(1+x)²=36
(1+x)²=36/25
1+x=6/5 1+x=-6/5
x=1/5 x=-11/5

(x ^ 2 + x) (x ^ 2 + x-3) - 3 (x ^ 2 + x) + 8 = 0

(x^2+x)(x^2+x-3)-3(x^2+x)+8=0（x^2+x)^2-6(x^2+x)+8=0(x^2+x-4)(x^2+x-2)=0x^2+x-4=0 x^2+x-2=0(x+1/2)^2=17/4 (x+2)(x-1)=0x+1/2=±√17/2 x3=-2 x4=1x1=√17/2-1/2x2=-√17/2-1/2

0.8 × (x-0.4) = 8,

0.8×(x—0.4)=8
x－0.4=8÷0.8
x－0.4=10
x=10+0.4
x=10.4

How to solve the equation when 4 (x + 0.8) = 7.2

4(x+0.8)=7.2
x+0.8=7.2÷4
x+0.8=1.8
x=1
Or:
4(x+0.8)=7.2
4x+3.2=7.2
4x=7.2-3.2
4x=4
x=1

What is the basis for solving the equation x △ 0.3 = 8

The equation still holds

To solve the equation, 8 out of 15 * 5 out of 6 = 18 out of 25

8 out of 15 * 5 out of 6 = 18 out of 25
8x/15=18/25×6/5
8x/15=108/125
x=108/125×15/8
x=81/50

Solve equation 1.8x = 2.6 + 1.18

1.8x=3.78
x=3.78/1.8=2.1

Solving equation: 3 / 4 = 8 / 9: 1 / 2 (x-3): 4 / 5 = 5 / 16: 1 / 4: 15: 8x * 5 / 6 = 18 / 25

5

(8x^2+4x+1)(-8x^2+4x-1) x=1/2

Use the square difference to do this problem. Put forward the minus sign - (8x ^ 2 + 4x + 1) (8x ^ 2-4x + 1) = - (8x ^ 2) ^ 2 - (4x + 1) ^ 2, bring in x = 1 / 2, and get = - 16 ^ 2-9 = - 256-9 = - 265