Question

Alguém me ajuda por favorrr

Answer 1

Explicação passo-a-passo:

1)

a) $\sf (15x)\div(3x^2)=\red{+\dfrac{5}{x}}$

b) $\sf (16x)\div(8x)=\red{+2}$

c) $\sf (-30x)\div(+3x^3)=\red{-\dfrac{10}{x^2}}$

d) $\sf (+8x)\div(-2x)=\red{-4}$

g) $\sf (+6x^2y)\div(-2xy)=\red{-3x}$

h) $\sf (-7abc)\div(-ab)=\red{+7c}$

i) $\sf (15x)\div(6x)=\red{+2,5}$

j) $\sf (20a^3b^2)\div(15ab^2)=\red{+\dfrac{4a^2}{3}}$

2)

a) $\sf (10xy)\div(5x)=\red{+2y}$

b) $\sf (x^3y^2)\div(2xy)=\red{+0,5x^2y}$

c) $\sf (-3xz^2)\div(-3xz)=\red{+z}$

d) $\sf (-14mn^3)\div(7mn^2)=\red{-2n}$

3)

a) $\sf (+3x^2)^2=\red{+9x^4}$

b) $\sf (-8x)^2=\red{+64x^2}$

c) $\sf (2x)^3=\red{8x^3}$

d) $\sf (3y^2)^3=\red{27y^6}$

e)

• $\sf (-y^2)^2=\red{+y^4}$

• $\sf (-y^2)^3=\red{-y^6}$

f)

• $\sf (-mn)^2=\red{+m^2n^2}$

• $\sf (-mn)^3=\red{-m^3n^3}$

g)

• $\sf (2xy^2)^2=\red{+4x^2y^4}$

• $\sf (2xy^2)^3=\red{+8x^3y^6}$

h) $\sf (-4x^2b)^2=\red{+16x^4b^2}$

i) $\sf (-3y^2)^3=\red{-27y^6}$

j) $\sf (-6m^3)^2=\red{+36m^6}$

k)

• $\sf (-3x^3)^2=\red{+9x^6}$

• $\sf (-3x^3)^3=\red{-27x^9}$

l) $\sf (-2x^2m^3)^3=\red{-8x^6m^9}$