Standardni oblik y = (2x +3) ^ 3 - (4x-2) ^ 2?

Standardni oblik y = (2x +3) ^ 3 - (4x-2) ^ 2?
Anonim

Odgovor:

#:. boja (plava) (y = 8x ^ 3 + 20x ^ 2 + 70x + 23 #

Obrazloženje:

# Y = (2 x + 3) ^ 3- (4 x-2) ^ 2 #

Prvo pojednostavite # (2x + 3) ^ 3 #

#COLOR (bijeli) (aaaaaaaaaaaaa) ## 2x + 3 #

#COLOR (bijeli) (aaaaaaaaaaa) ## podcrtano (xx 2x + 3) #

#COLOR (bijeli) (aaaaaaaaaaaaa) ## 4x ^ 2 + 6x #

#COLOR (bijeli) (aaaaaaaaaaaaaaaaaaa) ## 6x + 9 #

#COLOR (bijeli) (aaaaaaaaaaaaa) ##overline (4x ^ 2 + 12x + 9) *

#COLOR (bijeli) (aaaaaaaaaaa) ## xx 2x + 3 #

#COLOR (bijeli) (aaaaaaaaaaaaa) ##overline (8x ^ 3 + 24x ^ 2 + 18x) #

#COLOR (bijeli) (aaaaaaaaaaaaaaaaaa) ## 12x ^ 2 + 36x + 27 #

#COLOR (bijeli) (aaaaaaaaaaaaa) ##overline (boja (ljubičasta) (8x ^ 3 + 36x ^ 2 + 54x + 27) #

Zatim pojednostavite #COLOR (zeleno) ((4x-2) ^ 2 #

#COLOR (zeleno) (= (4x-2), (4x-2)) *

#:. boje (zeleno) ((4x-2) ^ 2 = 16x ^ 2-16x + 4 #

#COLOR (ljubičasta) ((2 x + 3) ^ 3 ^ 3 = 8 x + 36x ^ 2 + 54x + 27 #

#:. y = 8x ^ 3 + 36x ^ 2 + 54x + 27- (16x ^ 2-16x + 4) *

#:. boje (narančasta) (y = 8x ^ 3 + 36x ^ 2 + 54x + 27-16x ^ 2 + 16x-4) *

#:. boja (plava) (y = 8x ^ 3 + 20x ^ 2 + 70x + 23 #