Question

Can someone help me on this question?

Answer 1

\[\sqrt{4x-7}-1=2\] how do i find the solution set?

Answer 2

add 1 to both sides

Answer 3

Add 1 to both sides
sqrt 4x - 7 = 3

Answer 4

you need to make it so that only x is in the left side

Answer 5

and you know 3^2 is 9 so the numbers in the sqrt() have to equal 9

Answer 6

what - 7 equals 9 ?

Answer 7

divide by 4 to get x

Answer 8

arent you skipping a lot of steps there?

Answer 9

Yes, No, I might be doing it a different way

Answer 10

so is it 4?

Answer 11

or after step1, square both sides so you have
4x - 7 = 3^2
4x - 7 = 9
4x -7+7 = 9+7
4x = 16
x=4, yes

Answer 12

And there is only one answer? Not a answer set?

Answer 13

pretty sure only that answer, can't have a sqrt of a negitive #,

Answer 14

you actually know by looking at the degree...the degree of x is 1 so 1 solution

Answer 15

Ah. OK, thanks.