Question

Select the expression that is equivalent to (x+4)?

о
A. x2 + 4x + 16
O
B. x2 + 8x2 +16
O c. x2 + 8x+16
O D. 2x + 8x + 16

Answer 1

C. x^2 + 8x +16

Explanation:

(x+4)(x+4)

`x^(2)`+4x+4x+16

`x^(2)`+8x+16

A. x^2 + 4x + 16 -> No! they did not add the two 4x

B. x^2 + 8x^2 + 16 -> No! they added the two 4 but they seem to have multiple the xs

C. x^2 + 8x + 16 -> Yes! it's the same results we got when we solve it

D. 2x + 8x +16 -> No! they added the two Xs.