Question

Simplify the following polynomial expression.
3x(-2x + 7) - 5(x -1) (4x -3)

Answer 1

Answer: -26x^2 + 56x -15

Explanation:

3x(-2x + 7) - 5(x -1) (4x -3)

-6x^2 + 21x - (5x + 5)(4x-3)

-6x^2 + 21x -20x^2 +15x + 20x -15

= -26x^2 + 56x -15