Answered

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help me pls
5x^2-45=0

Sagot :

Step-by-step explanation:

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

hope it helps.

Iliyaan

Answer:

x=±√9 or x= 3, x=-3

Step-by-step explanation:

The problem requires us to find the x.

So we must isolate the variable, as so-

[tex]5x^2-45=0\\5x^2=45[/tex] (add 45 to both sides)

Now we can divide both sides by -

[tex]5x^2=45\\x^2=9[/tex]

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

[tex]\sqrt{x^2} =\sqrt{9}[/tex]

x=±√9

or x= 3, x=-3

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