Question

7. Expand & Simplify (5x - 2)(2x + 3)-3(x - 1)^2
(3 Marks)

Answer 1

9x^2 + 17x

Explanation:

(5x - 2)(2x + 3)-3(x - 1)^2

12x^2 + 15x - 4x - 6 -3(x - 1)^2

12x^2 + 11x - 6 - 3(x^2-2-2x)

12x^2 + 11x - 6 - 3x^2 + 6 + 6x

9x^2 + 17x