SOLUTION: Solve 4x^2=20 Find the x-intercepts of f(x)=4x^2-20. What are the solutions? x=?(type an exact answer, using radicals as needed. rationalize all denominators. express complex num

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Question 342472: Solve 4x^2=20
Find the x-intercepts of f(x)=4x^2-20.
What are the solutions? x=?(type an exact answer, using radicals as needed. rationalize all denominators. express complex numbers in terms of i. use a comma to separate answers.
What are the x-intercepts? or are there no x-intercepts?(type an ordered pair. type an exact answer, using radicals as needed. rationalize all denominators. use a comma to separate answers as needed.
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
4x%5E2=20
4x%5E2-20=0
4%28x-sqrt%285%29%29%28x%2Bsqrt%285%29%29=0
Two solutions:
x-sqrt%285%29=0
highlight%28x=sqrt%285%29%29
.
.
.
x%2Bsqrt%285%29=0
highlight%28x=-sqrt%285%29%29