if X + Y = 12 and xy = to 14 find the value of x square + Y square
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x+y=12
squaring on both sides
(x+y)^2 = (12)^2
x^2 + y^2 +2xy=144
given xy=14
x^2+y^2 +2(14)=144
x^2 +y^2+28=144
x^2+y^2=144-28
x^2+y^2=116 is answer
squaring on both sides
(x+y)^2 = (12)^2
x^2 + y^2 +2xy=144
given xy=14
x^2+y^2 +2(14)=144
x^2 +y^2+28=144
x^2+y^2=144-28
x^2+y^2=116 is answer
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