Question

Решите уравнение: x²-x+9=(x+2)²

Answer 1

x^2 - x + 9 = x^2 + 4x + 4
x^2 - x + 9 - x^2 - 4x - 4 = 0 
- x + 9 - 4x - 4 = 0 
- 5x + 5 = 0 
- 5x = - 5 
x = 1 

Answer 2

x²-x+9=(x+2)²
х²-х+9=х²+4х+4
х²-х+9-х²-4х-4=0
-5х+5=0
-5х=-5
х=1