Question

I just need the answer please n thank u<3

Answer 1

C.
`x=-9 \textsf{ and }x=1`

Explanation:

`(x+4)^2=25`

`(x+4)(x+4)=25`

expand the brackets:

`x^2+8x+16=25`

subtract 25 from both sides:

`x^2+8x-9=0`

factor:

`x^2+9x-x-9=0`

`x(x+9)-1(x+9)=0`

`(x-1)(x+9)=0`

solve for x:

`x-1=0 \implies x=1`

`x+9=0 \implies x=-9`