Expand: (2x+y+5)(2x+y-9) – InterviewSolution

1.	Expand: (2x+y+5)(2x+y-9)
Answer» -STEP EXPLANATION:(2X+y+5)(2x+y-9)=2x(2x+y-9)+y(2x+y-9)+5(2x+y-9)=4x^2+2xy-18x+2xy+y^2-9y+10x+5y-45=4x^2+4xy-8x+y^2+4y-45=4x^2+y^2+4xy-8x+4y-45

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