Question

5x^2 = 42x + 27
use factoring to solve the quadratic equation.​

Answer 1

x = -3/5 or x = 9

Explanation:

5x^2=42x+27

Step 1: Subtract 42x+27 from both sides.

5x^2−(42x+27)=42x+27−(42x+27)

5x^2−42x−27=0

Step 2: Factor left side of the equation.

(5x+3)(x−9)=0

Step 3: Set factors equal to 0.

5x+3=0 or x-9=0