Question

Assinale a alternativa de menor valor:

Answer 1

Explicação passo-a-passo:

a)

$\sf (-1)^4=(-1)\cdot(-1)\cdot(-1)\cdot(-1)=1$

b)

$\sf (-3)^{-4}=3^{-4}=\left(\dfrac{1}{3}\right)^4=\dfrac{1}{3}\cdot\dfrac{1}{3}\cdot\dfrac{1}{3}\cdot\dfrac{1}{3}=\dfrac{1}{81}$

c)

$\sf (0,01)^2=(0,01)\cdot(0,01)=0,0001=\dfrac{1}{10000}$

d)

$\sf 12^{-3}=\left(\dfrac{1}{12}\right)^3=\dfrac{1}{12}\cdot\dfrac{1}{12}\cdot\dfrac{1}{12}=\dfrac{1}{1728}$

e)

$\sf (-3)^{-2}=\left(-\dfrac{1}{3}\right)^{2}=\left(-\dfrac{1}{3}\right)\cdot\left(-\dfrac{1}{3}\right)=\dfrac{1}{9}$

Letra C

Answer 2

Oie, Td Bom?!

■ Resposta: Opção C.

a)

$( - 1) {}^{4} = 1 {}^{4} = 1$

b)

$( - 3) {}^{ - 4} = 3 {}^{ - 4} = \frac{1}{3 {}^{4} } = \frac{1}{81}$

c)

$(0,01) {}^{2} = ( \frac{1}{100} ) {}^{2} = \frac{1 {}^{2} }{100 {}^{2} } = \frac{1}{10000}$

d)

$12 {}^{ - 3} = \frac{1}{12 {}^{3} } = \frac{1}{1728}$

e)

$(- 3) {}^{ - 2} = 3 {}^{ - 2} = \frac{1}{3 {}^{2} } = \frac{1}{9}$

Att. Makaveli1996