Question

Help!! it's due by midnight and i can't figure this out

Answer 1

Step-by-step explanation:

The one that you highlighted is correct. The rest of the problems equal

$16x {}^{10}$

While the third equation equal

$2 {x}^{7} + 14 {x}^{7} = 16 {x}^{7}$

I would bring the x value to the 7th power instead of the 4th using the power of product rule.

So I would make the equation look like

$x {}^{7} ( {2x}^{3} + {14x}^{3} )$ which equal

16x^10