Question

me ajudem por favor!!

a) (x + 5).(6x²-12x +10)

b) (x-5).(x²+9x+10) =

c) (x + 7)(x²-x-2) =

d) (x + 5).(6x²-12x +10) =

e) (x + 5) (6x²-12x +10)=

f) (2x+5).(x²- 12x +10) =

g) (x + 5).(x²-12x +10) =

h) (5x-5).(x²- 12x +10) =​

Answer 1

Explicação passo-a-passo:

a)

$(x+5)\cdot(6x^2-12x+10)=6x^3-12x^2+10x+30x^2-60x+50$

$(x+5)\cdot(6x^2-12x+10)=6x^3+18x^2-50x+50$

b)

$(x-5)\cdot(x^2+9x+10)=x^3+9x^2+10x-5x^2-45x-50$

$(x-5)\cdot(x^2+9x+10)=x^3+4x^2-35x-50$

c)

$(x+7)\cdot(x^2-x-2)=x^3-x^2-2x+7x^2-7x-14$

$(x+7)\cdot(x^2-x-2)=x^3+6x^2-9x-14$

d)

$(x+5)\cdot(6x^2-12x+10)=6x^3-12x^2+10x+30x^2-60x+50$

$(x+5)\cdot(6x^2-12x+10)=6x^3+18x^2-50x+50$

e)

$(x+5)\cdot(6x^2-12x+10)=6x^3-12x^2+10x+30x^2-60x+50$

$(x+5)\cdot(6x^2-12x+10)=6x^3+18x^2-50x+50$

f)

$(2x+5)\cdot(x^2-12x+10)=2x^3-24x^2+20x+5x^2-60x+50$

$(2x+5)\cdot(x^2-12x+10)=2x^3-19x^2-40x+50$

g)

$(x+5)\cdot(x^2-12x+10)=x^3-12x^2+10x+5x^2-60x+50$

$(x+5)\cdot(x^2-12x+10)=x^3+7x^2-50x+50$

h)

$(5x-5)\cdot(x^2-12x+10)=5x^3-60x^2+50x-5x^2+60x-50$

$(5x-5)\cdot(x^2-12x+10)=5x^3-65x^2+110x-50$

Answer 2

Oie, Td Bom?!

a)

$(x + 5) \: . \: (6x {}^{2} - 12x + 10) \\ x \: . \: (6x {}^{2} - 12x + 10) + 5(6x {}^{2} - 12x + 10) \\ 6x {}^{3} - 12x {}^{2} + 10x + 30x {}^{2} - 60x + 50 \\ 6x {}^{3} + 18x {}^{2} - 50x + 50$

b)

$(x - 5) \: . \: (x {}^{2} + 9x + 10) \\ x \: . \: (x {}^{2} + 9x + 10) - 5(x {}^{2} + 9x + 10) \\ x {}^{3} + 9x {}^{2} + 10x - 5x {}^{2} - 45x - 50 \\ x {}^{3} + 4x {}^{2} - 35x - 50$

c)

$(x + 7) \: . \: (x {}^{2} - x - 2) \\ x \: . \: (x {}^{2} - x - 2) + 7(x {}^{2} - x - 2) \\ x {}^{3} - x {}^{2} - 2x + 7x {}^{2} - 7x - 14 \\ x {}^{3} + 6x {}^{2} - 9x - 14$

d)

$(x + 5) \: . \: (6x {}^{2} - 12x + 10) \\ x \: . \: (6x {}^{2} - 12x + 10) + 5(6x {}^{2} - 12x + 10) \\ 6x {}^{3} - 12x {}^{2} + 10x + 30x {}^{2} - 60x + 50 \\ 6x {}^{3} + 18x {}^{2} - 50x + 50$

e)

$(x + 5) \: . \: (6x {}^{2} - 12x + 10) \\ x \: . \: (6x {}^{2} - 12x + 10) + 5(6x {}^{2} - 12x + 10) \\ 6x {}^{3} - 12x {}^{2} + 10x + 30x {}^{2} - 60x + 50 \\ 6x {}^{3} + 18x {}^{2} - 50x + 50$

f)

$(2x + 5) \: . \: (x {}^{2} - 12x + 10) \\ 2x \: . \: (x {}^{2} - 12x + 10) + 5(x {}^{2} - 12x + 10) \\ 2x {}^{3} - 24x {}^{2} + 20x + 5x {}^{2} - 60x + 50 \\ 2x {}^{3} - 19x {}^{2} - 40x + 50$

g)

$( x+ 5) \: . \: (x {}^{2} - 12x + 10) \\ x \: . \: (x {}^{2} - 12x + 10) + 5(x {}^{2} - 12x + 10) \\ x {}^{3} - 12x {}^{2} + 10x + 5x {}^{2} - 60x + 50 \\ x {}^{3} - 7x {}^{2} - 50x + 50$

h)

$(5x - 5) \: . \: (x {}^{2} - 12x + 10) \\ 5x \: . \: (x {}^{2} - 12x + 10) - 5(x {}^{2} - 12x + 10) \\ 5x {}^{3} - 60x {}^{2} + 50x + 5x {}^{2} + 60x - 50 \\ 5x {}^{3} - 65x {}^{2} - 110x - 50$

Att. Makaveli1996