SOLUTION: 4x^2-9=0

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Question 940558: 4x^2-9=0
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
4x%5E2-9=0
%282x%29%5E2-3%5E2=0
%282x-3%29%282x%2B3%29=0
solutions:
if %282x-3%29=0 => 2x=3 => x=3%2F2=> highlight%28x=1.5%29
and
if %282x%2B3%29=0 => 2x=-3 => x=-3%2F2=> highlight%28x=-1.5%29

+graph%28+600%2C+600%2C+-10%2C+10%2C+-10%2C+10%2C+4x%5E2-9%29+