Question

5n^2 = 4n^2 - 4n Solve each equation. Factor and use the zero product property to solve. Show all work algebraically.

Answer 1

5n^2 = 4n^2 - 4n

Subtract 4n^2 from both sides and add 4n to both sides.

n^2 + 4n = 0

n(n + 4) = 0

n = 0 or n + 4 = 0

n = 0 or n = -4