Question

solve for x: √2x=3=x

Answer 1

thers must be a mistake in yur question jake - theres two '=' signs

Answer 2

oh sorry its √2x+3 =x

Answer 3

\[\sqrt{2x} or \sqrt2 x\]

?

Answer 4

or\[\sqrt{2x+3}\]

?

Answer 5

\[\sqrt{2x+3}=x\]

Answer 6

Cool.

Square both sides to get:

2x + 3 = x^2

x^2 - 2x -3 = 0

(x+1)(x-3) = 0

x = -1 or x=3

Answer 7

square both sides

Answer 8

Now, test the answers. It can't be -1

So answer is 3.

Answer 9

^No.

It can't be -1 because:

sqrt(1) is not equal to -1.

Always plug in the values and test it.