SOLUTION: solve the incomplete quadratic equation by the square root method 1) x/4=9/x

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Question 204165: solve the incomplete quadratic equation by the square root method
1) x/4=9/x
Answer by RAY100(1637) About Me  (Show Source):
You can put this solution on YOUR website!
x/4 =9/x,,,,,cross multiply
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x^2 =36
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take square root of both sides
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x= +/- 6
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check,,,6/4 =9/6 = 3/2,,,ok
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-6/4 =9/-6 = - 3/2,,,,ok