SOLUTION: 9a^2+25b^2 Factor using imaginary numbers a^2+4a+5

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Question 1108167: 9a^2+25b^2
Factor using imaginary numbers
a^2+4a+5
Answer by ikleyn(52884) About Me  (Show Source):
You can put this solution on YOUR website!
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9a%5E2%2B25b%5E2 = (3a + 5*i*b)*(3a - 5*i*b),


where "i" is the imaginary unit sqrt%28-1%29.