Question

Which of the following is a solution to 5(√x-7)=10?

Answers: x = –3
x = –5
x = 11
x = 9

Answer 1

11

Answer 2

you can substitue to get your answer.

Answer 3

sqrx-7=2
x-7=4
x=4+7
x=11

Answer 4

i can't understand the calculation

Answer 5

1)divide by 5 both sides
2) raise to the 2nd power
3) i think u get the rest

Answer 6

sqartx=9
or,x=81

Answer 7

is it not

Answer 8

no whn u raise 2 the 2nd power u get x-7=2^2
x-7=4
x=4+7
x=11

Answer 9

but there is not sqaroot(x-7)
sqarootx

Answer 10

no it is all under sqr...:)