SOLUTION: A. Solve {{{4x^2=20}}} -What are the solutions? x=____ B. Find the x-intercepts of {{{f(x)=4x^2-20}}} -What are the x-intercepts? The x-intercepts are ____.

Algebra ->  Graphs -> SOLUTION: A. Solve {{{4x^2=20}}} -What are the solutions? x=____ B. Find the x-intercepts of {{{f(x)=4x^2-20}}} -What are the x-intercepts? The x-intercepts are ____.      Log On


   

Question 397789: A. Solve 4x%5E2=20
-What are the solutions?
x=____
B. Find the x-intercepts of f%28x%29=4x%5E2-20
-What are the x-intercepts?
The x-intercepts are ____.
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
A. Solve 4x%5E2=20
Divide both sides by 4
x%5E2+=+5
Find the square root of both sides
x = +/-sqrt%285%29
:
B. Find the x-intercepts of f%28x%29=4x%5E2-20
-What are the x-intercepts?
The x-intercepts are +sqrt%285%29 and - sqrt%285%29.