Question

3. Factor 72x³ +72x² +18x.

O 2x(6x + 3)²
O 2x(6x+3)
O 2x(6x+3)(6x - 3)
O 72x(x + 1)²

Answer 1

18x(2x+1)(2x+1)

Explanation:

Factor out common Terms; 18x: 18x(4x^2+4x+1)

Factor; 4x^2+4x+1: (2x+1) (2x+1)

= 18x (2x+1)(2x+1)

= 18x (2x+1)^2