Question

Please help me with how to solve this equation by completing the square. The answer should be (2, -6)

Equation: 5n^2+20n-60=0

Answer 1

(2, -6)

Explanation:

5n^2+20n-60

(5n+30)(n-2)

5n + 30 = 0

5n = -30

(5n = -30)/5

n = - 6

n - 2 = 0

n = 2

answer: (2, -6)