Question 542160
2(4x^2+3y-7y^2)+(2x^2-5xy-3y^2)



8x^2+6y-14y^2+2x^2-5xy-3y^2



(8x^2+2x^2)+6y-5xy+(-14y^2-3y^2)



10x^2+6y-5xy-17y^2



So 2(4x^2+3y-7y^2)+(2x^2-5xy-3y^2) = 10x^2+6y-5xy-17y^2



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