Question

Решите уравнение x^2-x+9=(x+2)^2

Answer 1

X^2 - X + 9 = ( X + 2 )^2 
X^2 - X + 9 = X^2 + 4X + 4 
X^2 - X^2 - X - 4X = 4 - 9 
- 5X = - 5 
X = 1