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Question Number 128444 by ZulqarnainHaiderSial last updated on 07/Jan/21

(x+y)(x+y)=? if xy=−3 and x^2 +y^2 =10

(x+y)(x+y)=?ifxy=−3andx2+y2=10

Commented by BHOOPENDRA last updated on 07/Jan/21

(x+y)^2 =x^2 +y^2 +2xy =10+2(−3) =4

(x+y)2=x2+y2+2xy=10+2(−3)=4

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