and questions no 21 and 22
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Heya
ques.22
2(x+y)^2-9(x+y) -5
now open the identity
2( x^2 + 2xy +y^2)-9(x+y) -5
2x^2 + 4xy + 2y^2 -9x -9y -5
ques.22
2(x+y)^2-9(x+y) -5
now open the identity
2( x^2 + 2xy +y^2)-9(x+y) -5
2x^2 + 4xy + 2y^2 -9x -9y -5
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