Question

Simplify:
6x (x-3) + x (2-5 x) + 3 x²

Answer 1

2(2x² - 9)

Explanation:

6x (x-3) + x (2-5 x) + 3 x² = 6x²- 18 + 2x-5x² + 3 x²

= 6x²-5x² + 3 x² + 2x - 18

=4x² - 18

=2(2x² - 9)

Answer 2

4x² - 16x

Explanation:

6x(x - 3) + x(2 - 5x) + 3x²

6x² - 18x + 2x - 5x² + 3x²

6x² - 5x² + 3x² - 18x + 2x

x² + 3x² - 16x

4x² - 16x