Question

Help me pls
5x^2-45=0

Answer 1

x=±√9 or x= 3, x=-3

Explanation:

The problem requires us to find the x.

So we must isolate the variable, as so-

`5x^2-45=0\\5x^2=45` (add 45 to both sides)

Now we can divide both sides by -

`5x^2=45\\x^2=9`

Now we must square root both sides to find the root of x.

`√(x^2) =√(9)`

x=±√9

or x= 3, x=-3

Answer 2

Explanation:

• 5x²-45=0
• 5x²=45
• x²=9
• x=√9
• x=3

hope it helps.