Question

Algebra help

Answer 1

The only class I take for FLVS showed an example of this kind of problem but gave it no solution and didn't tell you exactly how to solve it. They gave no other examples of what to do.

Answer 2

\(\large \sqrt{x-5}+7 = 11\)

Answer 3

subtract 7 both sides

Answer 4

x-5=4 ?

Answer 5

who ate the radical ? :)

Answer 6

the 7-7 ?

Answer 7

\(\large \sqrt{x-5} = 4\)

Answer 8

then do I square 4?

Answer 9

yup square both sides

Answer 10

so x - 5 equals 16
then I add 5 to both sides? since it's substraction

Answer 11

yup

Answer 12

x=21 not extraneous

Answer 13

now plug that value and see if it satisfies.

slution wud be extraneous, if it doesnt satisfy the original equation

Answer 14

Yes, its not extraneous,

how u able to conclude that so fast

Answer 15

I didn't solve it yet, I was going to type "or is it x=21 extraneous' but you were typing so I let you go first lol

Answer 16

okay lol, plug x = 21 in original equation

Answer 17

if it satisfies the equation, the IT IS NOT EXTRANEOUS

Answer 18

Alright, thank you!

Answer 19

np :)