Question

2 Determine whether the values given of the Quadratic equation are the roots of the 2 equation. X + 4x - 5 = 0,X = 1,-1​

Answer 1

Answer:

For x = 1

(1)² + 4 (1) − 5 = 0

⇒1+4-5=0

⇒5-5 0

So, x = 1 is a solution of the given equation.

For x = -1

(−1)² + 4 (-1) − 5 = 0 - ⇒1-4-5=0

⇒-3 - 5 = 0 -8 / 0

So, x = -1 is not a solution of the given

equation.

Thus, only x = 1 is root of the given equation.