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  • 15-01-2020
  • Mathematics
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2x(x+3y)-5y(4x-3)+2 x y

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Аноним Аноним
  • 15-01-2020

2x(x+3y)-5y(4x-3)+2 x y

multiply the first bracket by 2x

(2x)(x)=2x^2  (2x)(3y)=6xy

(-5y)(4x)=-20xy  (-5y)(-3)=15y

2x^2+6xy-20xy+15y+2xy

2x^2+6xy-20xy+2xy+15y ( combining like terms)

2x^2-14xy+2xy+15y

2x^2-12xy+15ymultiply the second bracket by -5y

answer:

2x^2-12xy+15y

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