Question

Solve the following equations for x. Identify any extraneous solutions. Show all work.-4√(x+9)=20
Pleaseeeeee

Answer 1

-4√(x + 9) = 20
√(x + 9) = -5
so what do you think, does it have a solution or not

Answer 2

im going to say yes but im really confused i dont know how to even start this problem

Answer 3

Does x=16?

Answer 4

im not sure. how did you get that?

Answer 5

√(x+9) = -5
x+9 = 25
x = 16

Answer 6

Is that it? That seems kinda easy. :)

Answer 7

You get rid of the square root by squaring both sides

Answer 8

So, what do you think. Does it have a solution ?

Answer 9

Thanks so much :)

Answer 10

yes

Answer 11

there's no solution

Answer 12

Hmm. square root of 25 equals both positive and negative 5...

Answer 13

Thanks for all the help Zale and Jenny :)

Answer 14

Np

Answer 15

you're welcome :)