/12 = -6 what statement makes this true?

To find the answer, you'll have to do the inverse operation of what is shown. So in you're case, the inverse operation will be multiplication, since the original one is a division:

x / 12 = -6 → we take 12 to the right side of the equation

x = -6 * 12 → we do the I.O.* of "÷ 12" by solving -6 * 12

x = -72 → final answer

To prove your

-72 / 12 = -6

Hope it helped,

BioTeacher101

(If you have any questions, feel free to ask them in the comments)

- 2 + 10x³ - 21x² + 19x - 4

step-by-step explanation:

each term in the second factor is multiplied by each term in the first factor

x²(- 2x² + 4x - 1) - 3x(- 2x² + 4x - 1) + 4(- 2x² + 4x - 1) ← distribute

= - 2 + 4x³ - x² + 6x³ - 12x² + 3x -8x² + 16x - 4

collect like terms

= - 2 + 10x³ - 21x² + 19x - 4 ← in standard form