Question

X +y = 12 $ xy =32 find the value of × square +y square

Answer 1

(x+y)=x^2+y^2+2xy
12^2-2xy=x^2+y^2
144-64=x^2+y^2
x^2+y^2=80

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Answer 2

Answer:

given =.x+y = 12

xy=32

find $x^{2}+y^{2}=?$

x+y = 12 (squaring on both side)

$x^{2}+y^{2}+ 2xy = 144 \\ x^{2}+y^{2}+2×32 = 144 \\ x^{2}+y^{2}=.144-2×32 \\ x^{2}+y^{2}=80$

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