Question

Solve the following quadratic equations by factorization:

4x² + 5x = 0

Answer 1

We have

4x² + 5x = 0

⇒ x(4x + 5) = 0

either x = 0 or 4x = -5

⇒ x = 0 or x = -5/4

Thus, x = 0 and x = -5/4 are two roots of equation 4x² + 5x = 0