Question

F(x)= x²+x-2
Résoudre equation f(x)=-2

Answer 1

Solving the equation f(x) = -2, set the given function equal to -2, the solutions are x = 0 and x = -1.

Step-by-step explanation:

To solve the equation f(x) = -2, you need to set the given function equal to -2 and solve for x.

Given: f(x) = x² + x - 2 = -2

Set the equation equal to zero: x² + x - 2 + 2 = 0

Simplify the equation: x² + x = 0

Factor out x from the left side of the equation: x(x + 1) = 0

Set each factor equal to zero and solve for x:

1. x = 0
2. x + 1 = 0

Therefore, the solutions to the equation f(x) = -2 are x = 0 and x = -1.