SOLUTION: Please help me solve this by finding the zero of the function{{{f(x)=9x^4-25x^2}}}

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Question 364870: Please help me solve this by finding the zero of the functionf%28x%29=9x%5E4-25x%5E2
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
f%28x%29=9x%5E4-25x%5E2=0
x%5E2%289x%5E2-25%29=0
x%5E2%283x-5%29%283x%2B5%29=0
Three solutions:
highlight%28x=0%29
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.
.
3x-5=0
3x=5
highlight%28x=5%2F3%29
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.
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3x%2B5=0
3x=-5
highlight%28x=-5%2F3%29