Omg I need help ASAP, I do not understand and I have a quiz soon

The Answers from up to down should be 11,3,-3,-12

Step-by-step explanation:

I'm just going to explain the first 2 boxes because the rest is repeat. In the first box you have the value of x so you want to plug it into the equation getting y=-2/3*(-6)+7 getting answer 11. In the box its the opposite, you do -2/3x+7=5 then solve for x

-2/3x=-2

      x=3

the rest is the same concept!

Answer= x³+4x²+16x+64

Expand the following:(x + 4 i) (x - 4 i) (x + 4)
(x - 4 i) (x + 4) = (x) (x) + (x) (4) + (-4 i) (x) + (-4 i) (4) = x^2 + 4 x - 4 i x - 16 i = -16 i + (4 - 4 i) x + x^2:
-16 i + (-4 i + 4) x + x^2 (4 i + x)
 | | | | x | + | 4 i
 | | x^2 | + | (4 - 4 i) x | - | 16 i
 | | | | (-16 i) x | + | 64
 | | (4 - 4 i) x^2 | + | (16 + 16 i) x | + | 0
x^3 | + | (4 i) x^2 | + | 0 | + | 0
x^3 | + | 4 x^2 | + | 16 x | + | 64:
x^3 + 4 x^2 + 16 x + 64