SOLUTION: what are the solutions of 9x^2+16=0

Question 956473: what are the solutions of 9x^2+16=0

Found 2 solutions by stanbon, addingup:
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
what are the solutions of 9x^2+16=0
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Factor using imaginary numbers::
(3x-4i)(3x+4i) = 0
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x = (4/3)i or x = (-4/3)i
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Cheers,
Stan H.
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Answer by addingup(3677) (Show Source): You can put this solution on YOUR website!
9x^2+16=0 = 9x^2= -16; √9x^2=√-16; 9x= 4i; x= 4i/9
Note: keep in mind that any time there is a negative under the radical sign, it comes out from underneath as the imaginary number "i" because the problem will contain a square root of -1, since i= √-1
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