SOLUTION: Factor y^2-15yz-41z^2

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Question 232210: Factor y^2-15yz-41z^2
Answer by checkley77(12844) About Me  (Show Source):
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y^2-15yz-41z^2
y+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+
y=(15+-sqrt[-15^2-4*1*-41])/2*1
y=(15+-sqrt[225+164)/2
y=(15+-sqrt389)/2
y=(15+-19.723)/2
y=(15+19.723)/2
y=34.723/2
y=17.362 ans.
y=(15-19.723)/2
y=-4.723)/2
y=-2.362 ans.