3) Simplifique as expressões reduzindo-as ao máximo

a) 2(????^2 + ???? + 1) + 3(????^2 + 2???? − 2) − 2(????^2 + 3???? − 3)
b) ????(???? + ???? − ????) + ????(???? + ???? −...

Question

3) Simplifique as expressões reduzindo-as ao máximo

a) 2(????^2 + ???? + 1) + 3(????^2 + 2???? − 2) − 2(????^2 + 3???? − 3)
b) ????(???? + ???? − ????) + ????(???? + ???? − ????) + ????(???? − ???? + ????)

Ed · Answer

Para simplificar as expressões:

a) 2(????^2 + ???? + 1) + 3(????^2 + 2???? − 2) − 2(????^2 + 3???? − 3)
   = 2????^2 + 2???? + 2 + 3????^2 + 6???? − 6 − 2????^2 − 6???? + 6
   = 3???? + 2

b) ????(???? + ???? − ????) + ????(???? + ???? − ????) + ????(???? − ???? + ????)
   = ????((???? + ???? − ????) + (???? + ???? − ????) + (???? − ???? + ????))
   = ????((???? + ???? − ????) + (???? + ???? − ????) + (???? − ???? + ????))
   = ????((???? + ???? − ????) + (???? + ???? − ????) + (???? − ???? + ????))
   = ????((3???? + 3????) + (3???? + 3????) + (3???? + 3????))
   = ????(9????)
   = 9????

3) Simplifique as expressões reduzindo-as ao máximo a) 2(????^2 + ???? + 1) + 3(????^2 + 2???? − 2) − 2(????^2 + 3???? − 3) b) ????(???? + ???? − ????) + ????(???? + ???? −...

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