Question

preciso do resultado com a conta:

a) 2xy . (8x-4x^2+6)

b) (2xy) . (3x+10y-5) + (2xy) . (8x-4x^2+6)

Answer 1

Resposta:

a) 2xy.(8x-4x^2+6) =

= 2xy.8x-2xy.4x^2+2xy.6

= 16x^2y-2xy.4x^2+2xy.6

= 16x^2y-8x^3y+2xy.6

= 16x^2y-8x^3y+6xy

b) (2xy).(3x+10y-5)+(2xy).(8x-4x^2+6) =

2xy.(3x+10y-5)

2xy.3x+2xy.10y-2xy.5

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

6x^2y+20xy^2-2xy.5

6x^2y+20xy^2-10xy

2xy.(8x-4x^2+6)

= 2xy.8x-2xy.4x^2+2xy.6

= 16x^2y-2xy.4x^2+2xy.6

= 16x^2y-8x^3y+2xy.6

= 16x^2y-8x^3y+12xy

6x^2y+20xy^2-10xy+16x^2y-8x^3y+12xy

22x^2y+20xy^2-10xy+16x^2y-8x^3y+12xy

22x^2y+20xy^2+2xy-8x^3y

Espero ter ajudado!!

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