Question

Multiply. (x – 4)(x2 – 5x + 3)

Answer 1

=(x-4)(2x-5x+3)
=(x-4)(-3x+3)
=-3x²+3x-12x-12
=-3x²-9x-12
=-6x-12
=x=-12/6
=x=-2

Answer 2

The answer is x³ - 9x² + 23x  - 12

Let's use distributive property method:
(x - 4)(x² - 5x + 3) = x * x² + x * (-5x) + x * 3 - 4 * x² - 4 * (-5x) - 4 * 3 =
                             = x³ - 5x² + 3x - 4x² + 20x - 12 =
                             = x³ - 9x² + 23x  - 12