Solution equation (x + 3) * 7 = 8x 152-x-5 = x (1-11th) 24x + 24 * three quarters * (100-x) = 1920 x+（x+27）+（x+27+25）=103 6500 * one fifth + x = five eighths * (6500 - one fifth * 6500-x) （3x+2）*4-4x=32 18x + (18-10) x * two thirds = 2870 45*6+45x-120=55x 5-x △ 5 * quarter = 4-x △ 4 （x-16）*6-（8*3+9*4+10）=（x-8）*3-（1*5+2*4） It is better to solve all the problems that can be solved *It's a multiplier

Solution equation (x + 3) * 7 = 8x 152-x-5 = x (1-11th) 24x + 24 * three quarters * (100-x) = 1920 x+（x+27）+（x+27+25）=103 6500 * one fifth + x = five eighths * (6500 - one fifth * 6500-x) （3x+2）*4-4x=32 18x + (18-10) x * two thirds = 2870 45*6+45x-120=55x 5-x △ 5 * quarter = 4-x △ 4 （x-16）*6-（8*3+9*4+10）=（x-8）*3-（1*5+2*4） It is better to solve all the problems that can be solved *It's a multiplier

（x+3）*7=8x
x=21
152-x-5 = x (1-11th)
x=77
24x + 24 * three quarters * (100-x) = 1920
x=20
x+（x+27）+（x+27+25）=103
x=8
6500 * one fifth + x = five eighths * (6500 - one fifth * 6500-x)
x=200
（3x+2）*4-4x=32
x=3
18x + (18-10) x * two thirds = 2870
45*6+45x-120=55x
x=15
5-x △ 5 * quarter = 4-x △ 4
x=-5
（x-16）*6-（8*3+9*4+10）=（x-8）*3-（1*5+2*4）
x=43

x^2+8x+16
Factorization

Original form
=x²+（4×2）x+4²
=（x+4）²