Question

What is the intermediate step in form (x+a)^2=b as a result of completing the square of the following equation

6x^2+72x-170=-2

Answer 1

6x² + 72x - 170 = -2

<=> 6x² + 72x - 168 = 0

<=> x² + 12x - 28 = 0

<=> x² + 12x + 36 = 64

<=> (x+6)² = 64

Explanation: