Question

Expand & simplify: (3x+5)(2x-4)-(3x+3)(x+6)

Answer 1

2x^2 + 17x + 2

Explanation:

(3x+4)*(2x-4) - (3x+3) * (x+6)

6x^2 - 12x + 8x - 16 - 3x^2 * 18x + 3x + 18

6x^2 - 4x - 16 - 3x^2 + 21x + 18

Combine like terms:

(6x^2 - 3x^2) + (-4x + 21x) + (-16 + 18)

= 3x^2 + 17x + 2