Question

if X + Y is equal to 12 and X Y is equal to 14 find the value of x square + Y square

Answer 1

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Answer 2

squaring both side
=(x+y)square= 12square
xsquare+2xy+ysquare =144
putting value. xy
xsquare+28+ysquare=144
xsquare+ysquare=144-28
xsquare+ysquare=116