SOLUTION: Hi, I need some help with this. I believe I have the correct answer, but I want to be certain. Solve:4x^2=20 Find the x-intercepts of f(x)=4x^2-20 I come up with x=square root

Algebra ->  Rational-functions -> SOLUTION: Hi, I need some help with this. I believe I have the correct answer, but I want to be certain. Solve:4x^2=20 Find the x-intercepts of f(x)=4x^2-20 I come up with x=square root      Log On


   

Question 467759: Hi,
I need some help with this. I believe I have the correct answer, but I want to be certain.
Solve:4x^2=20
Find the x-intercepts of f(x)=4x^2-20
I come up with x=square root 5,and - square root 5 for both. Am I correct?
Thanks so much for your help!!
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

4x^2=20



the x-intercepts of f(x)=4x^2-20   |When f(x) = 0

OR  4x^2 = 20



Yes! You are correct:  x = ħsqrt(5) in both cases