Question

How do you solve `100=25x^2`?

Answer 1

`x=2 and x=-2`

Explanation:

We can solve this by using square root method
So first we need to isolate the square (divide 25 on both sides of the equation) which give us `x^2=4`
Now take the `+-` square root on both sides of the equation in order to get rid of the square because square root is the opposite of the square so they cancel each other.
`x=+-2`