Question

(x2 – 3x – 40) = (x + 5)

Answer 1

x=−5 or x=9

Explanation:

Step 1: Subtract x+5 from both sides.

x2−3x−40−(x+5)=x+5−(x+5)

x2−4x−45=0

Step 2: Factor left side of equation.

(x+5)(x−9)=0

Step 3: Set factors equal to 0.

x+5=0 or x−9=0

Answer:

x=−5 or x=9