SOLUTION: Evaluate the polynomial when x=5 and y=-9.
x^2-3y^2+2xy
Algebra.Com
Question 610968: Evaluate the polynomial when x=5 and y=-9.
x^2-3y^2+2xy
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
x^2-3y^2+2xy
(5)^2-3(-9)^2+2(5)(-9)
25-3(81)+2(5)(-9)
25-243-90
-308
So x^2-3y^2+2xy = -308 when x = 5 and y = -9
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