Question

What are the solutions to the equation?

x^2= 625?

I need a couple of pointers. I'm a little lost

Answer 1

Take the square root of both sides

Answer 2

25 * 25 is 625

Answer 3

Be careful square roots can be positive or negative.

Answer 4

-625 + 625 + x2 = 0 + 625
-625 + 625 = 0
0 + x2 = 0 + 625
x2 = 0 + 625
x2 = 625
x2 = 625
x = {-25, 25}

Answer 5

so there are two solutions -25 and 25

Answer 6

I wish I could give all of you a Medal but Thank you so much! I now see how easy that was, and thank you Mihirb (:

Answer 7

Your welcome :)

Answer 8

\[x ^{2}-625=0\]\[(x+25)(x-25) = 0\]\[x=25\]\[x=-25\]