Question

Solve the following radical equation.

Answer 1

\[\sqrt{5x+5}=\sqrt{4x-7+2}\]

Answer 2

Square both sides

Answer 3

\[5x+5=4x-7+2\]

Answer 4

That is the answer?

Answer 5

\[5x+5=4x-5\]

Answer 6

\[x=-10\]

Answer 7

Thanks man!

Answer 8

http://openstudy.com/study?login#/updates/4f4e9474e4b019d0ebae526e

Answer 9

But if x is -10, the radicand is negative. So; NO SOLUTION

Answer 10

Can you help me with this other one i just posted link?

Answer 11

You always have to check the solutions to a radical equation because the squaring process frequently introduces an extraneous root.

Answer 12

Oh that makes sense.