Question

\[10x^{2} = 490\]

Please show me step by step how to solve, so i can understand how you got the answer.

Answer 1

divide both sides by 10 to get

x^2 = 49

Answer 2

I'm sure you can see the answer from here

Answer 3

Dividing a number that ends in zero by 10 is easy, just drop the last zero. So 490 divided by 10 is 49.

Now we have "x squared = 49"

So list your perfect squares...

1 squared = 1
2 squared = 4
3 squared = 9
4 squared = 16
etc...
You'll soon get to 49.

But remember that (-3)*(-3) also equals nine...

so you have TWO answers (one positive and one negative).

Answer 4

ty mathteacher1729

Answer 5

You're welcome. :)