If X+y = 12 and xy= 14, then what is the value of x^2 + y^2
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x+y = 12
(x+y)^2 = (12)^2
x^2 + y^2 + 2xy = 144
x^2 + y^2 + 28 = 144
x^2 + y^2 = 144 - 28
x^2 + y^2 = 116
(x+y)^2 = (12)^2
x^2 + y^2 + 2xy = 144
x^2 + y^2 + 28 = 144
x^2 + y^2 = 144 - 28
x^2 + y^2 = 116
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