(4x - 5)²=(x + 5)²
4x-5=x+5
4x-x=5+5
3x=10
x=10/3
раскроем скобки
16x2-20x-20x+25 = x2+5x+5x+25
15x2-50x = 0
5x(3x – 10) = 0
x(3x – 10) = 0
x1 = 0
3x – 10 = 0
x2 = 10/3
Ответ :
(4x - 5)²=(x + 5)²
4x-5=x+5
4x-x=5+5
3x=10
x=10/3
раскроем скобки
16x2-20x-20x+25 = x2+5x+5x+25
15x2-50x = 0
5x(3x – 10) = 0
x(3x – 10) = 0
x1 = 0
3x – 10 = 0
x2 = 10/3
Ответ :
x1 = 0
x2 = 10/3