Question

Simplify (X-2)(x+3)(2x+1)

Answer 1

Explanation:

Use FOIL method.

(x -2)(x+3) = x*x + x*3 + (-2)*x + (-2)*3

= x² + 3x - 2x -6 {Combinelike terms}

= x² + x - 6

(x² + x -6)*(2x + 1) = x²*2x + x²*1 + x*2x +x*1 + (-6)*2x + (-6)*1

= 2x³ + x² + 2x² + x -12x - 6

= 2x³ + 3x² - 11x - 6