7. which two equations are equivalent?
a. y = (x + 3)2 and y = x2 + 6
b. y = (x – 5)2 and y = x2 – 25
c. y = (x – 3)2 and y = x2 - 6x + 9
d. y = (x + 5)2 and y = x2 + 25x + 10

C. and

Step-by-step explanation:

before answering the problem let us remind the formula for square of sum and differences

We are going to use the above two formulas to solve each part and come to an answer

A.

Hence this option is not correct pair

B.

Hence this option is also not correct pair

C.

Hence this option is correct as it have equivalent pair

D.

Hence this option is also not correct pair

answer: -2+√x,-2-√x

i hope this , i don't know if you're looking for a pair or not.