Question

Two solutions of x(18 – x) = 2(9x – 32).

Answer 1

x = -8

x = 8

Explanation:

x(18 – x) = 2(9x – 32)

distribute

18x - x² = 18x - 64

Subtract 18x from both sides

-x² = -64

multiply both sides by -1

x² = 64

Take the square root of both sides

x = ± 8

x = -8

x = 8