SOLUTION: y^2-9y+81=

Question 99605: y^2-9y+81=
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
y^2-9y+81
Factor using the Quadratic Formula:
y = [9 +- sqrt(81-4*81)]/2
y = [9 +- sqrt(-243))/2
y = [9 +- 9isqrt(3))/2
y = [4.5 +- 4.5isqrt(3)]
Factors:
(y-4.5-4.5isqrt(3))(-4.5+4.5isqrt(3))
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Cheers,
Stan H.

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