Question

5) considerando que a=12 e b=2, calcule o valor de:
a) a² x b³= *
3 pontos
b) a³ : b² *
3 pontos

Answer 1

Explicação passo-a-passo:

a)

${a}^{2} \times {b}^{3}$

${12}^{2} \times {2}^{3}$

$144 \times 8 = 1152$

b)

${a}^{3} \div {b}^{2}$

${12}^{3} \div {2}^{2}$

$1728 \div 4 = 432$

Answer 2

Olá, bom dia!!!

Resposta:

$a) \: {a}^{2} \times {b}^{3} = \\ {12}^{2} \times {2}^{3} = \\ 144 \times 8 = \\ 1152 \\ \\ b) \: {a}^{3} \div {b}^{2} = \\ {12}^{3} \div {2}^{2} = \\ \frac{ {12}^{3} }{ {2}^{2} } = \frac{ {3}^{3} \times {4}^{3} }{ {2}^{2} } = \\ \frac{ {3}^{3} \times {2}^{6} }{ {2}^{2} } = \\ {3}^{3} \times {2}^{4} = \\ 2 \times {6}^{3} = \\ 2 \times 216 = \\ 432$

Espero ter ajudado!!

Bons estudos.