Please help with this equation. I will give brainless for the first answer. Thanks!

5 =x

Step-by-step explanation:

The expression is undefined when the denominator goes to zero

25 - x^2 =0

Add x^2 to each side

25 = x^2

Take the square root of each side

sqrt(25) = sqrt(x^2)

±5 = x

We want the non negative value

5 =x

b. would be the answer : )

step-by-step explanation:

step 1: add -16x to both sides.

16x−4y+−16x=64+−16x  

−4y=−16x+64

step 2: divide both sides by -4.

−4y /-4 = -16x + 64/-4

answer:   y=4x−16

hope i'm right