(x-y)(7x+3y)-(x-y)(5x+4y) please solve it in step by step explanation ​

Answers (1)

=(x-y)(7x+3y)-(x-y)(5x+4y) 

=(x-y){(7x+3y)-(5x+4y) }

=(x-y){7x+3y-5x-4y}

=(x-y){2x-y}

=2x2-2xy-xy+y2

=2x2-3xy+y2

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