Question

(-2).(-2).(-2).(-2).(-2).(-2).(-2).(-2).(-2).(-2),​

Answer 1

Resposta:

2 elevado a 10 = 2*2*2*2*2*2*2*2*2*2 = +1 .024.

O numero e positivo já que o expoente e par

Answer 2

O valor dessa expressão numérica é $\boxed{\sf 1024}$

Resolução

Para resolver essa expressão numérica nós precisamos sempre lembrar da regra de sinais:

• (+)*(+) = +       (-)*(-) = +

• (+)*(-) = –         (-)*(+) = –

Agora nós podemos resolver essa expressão, Veja:

Conta

$\sf \left(-2\right)\cdot \left(-2\right)\cdot \left(-2\right)\cdot \left(-2\right)\cdot \left(-2\right)\cdot \left(-2\right)\cdot \left(-2\right)\cdot \left(-2\right)\cdot \left(-2\right)\cdot \left(-2\right)\\\\\\\sf =4\left(-2\right)\left(-2\right)\left(-2\right)\left(-2\right)\left(-2\right)\left(-2\right)\left(-2\right)\left(-2\right)\\\\\\\sf =-8\left(-2\right)\left(-2\right)\left(-2\right)\left(-2\right)\left(-2\right)\left(-2\right)\left(-2\right)$

$\sf =16\times\left(-2\right)\left(-2\right)\left(-2\right)\left(-2\right)\left(-2\right)\left(-2\right)\\\\\\\sf =-32\times\left(-2\right)\left(-2\right)\left(-2\right)\left(-2\right)\left(-2\right)\\\\\\\sf =64\times\left(-2\right)\left(-2\right)\left(-2\right)\left(-2\right)\\\\\\\sf =-128\times\left(-2\right)\left(-2\right)\left(-2\right)\\\\\\\sf =256\times\left(-2\right)\left(-2\right)\\\\\\\sf =-512\times\left(-2\right)\\\\\\\boxed{\sf 1024}$

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