Question

Find the missing term 4x^2-8x+8-x^2+2x-4-3x^2+?=4

Answer 1

Hi there! The answer is 6x


$4 x^{2} - 8x +8 - x^{2} +2x - 4 - 3 x^{2} + ? = 4$

$0 x^{2} - 8x +8 +2x - 4 + ? = 4$

$- 8x + 4 + 2x + ? = 4$

$- 6x + 4 + ? = 4$

Now we can see we have to add 6x to make the equation correct.