Question

Solve the radical equation for x.

Answer 1

\[\sqrt{9x^2+4}=3x\]

Answer 2

Start by squaring both sides. What do you get?

Answer 3

I got 9x^2+4=9x^2

Answer 4

Now subtract 9x^2 from both sides. What do you get?

Answer 5

i get 4=0?

Answer 6

Correct. You did both steps correctly, and you got a false answer. Therefore, there is no solution to the equation.

Answer 7

Oh. I never thought about that. Thank you.

Answer 8

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