Question

If X+Y=12 And Xy =32, Find X Square +Y Square

Answer 1

Answer:

x2 + y2 = ( x+ y)2 - 2xy

= 144 - 64

= 80

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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