
Propriedades das Potências
Authored by JOICE OLIVEIRA
Mathematics
8th Grade
Used 1+ times

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38 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
A professora de Samara escreveu que 2^3 * 2^7 = 2^{3+7} = 2^{10} e disse que esse cálculo é possível porque está aplicando a propriedade do produto de potências de mesma base. Qual é a propriedade utilizada?
a^m * a^n = a^{m+n}
a^m * a^n = a^{m-n}
a^m * a^n = a^{m * n}
a^m * a^n = a^{m/n}
2.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Analise as resoluções que Samara escreveu e ao sinal do professor, indique as alternativas que estão corretas. Qual das seguintes alternativas está correta?
3^2 * 3^7 * 3^{-2} = 3^{2+7-2} = 3^7
4^3 * 4^{-7} = 4^{4-7} = 4^{11}
5^4 * 5^6 * 5^3 = 5^{4+6+3} = 5^{13}
2^3 * 2^5 = 2^{3+5} = 2^{15}
3.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Qual das seguintes alternativas está correta?
3^2 * 3^7 * 3^{-2} = 3^{2+7-2} = 3^7
4^3 * 4^{-7} = 4^{4-7} = 4^{11}
5^4 * 5^6 * 5^3 = 5^{4+6+3} = 5^{13}
2^3 * 2^5 = 2^{3+5} = 2^{15}
4.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Quando utilizamos a potenciação?
Quando precisamos descobrir a soma de dois números.
Quando precisamos descobrir o produto cuja base se repete n vezes.
Quando precisamos dividir dois números.
Quando precisamos subtrair dois números.
5.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Em números inteiros, quando a potência será negativa?
Quando o expoente for par e a base for negativa.
Quando o expoente for ímpar e a base for positiva.
Quando o expoente for ímpar e a base for negativa.
Quando o expoente for par e a base for positiva.
6.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Qual é o resultado de (-2)³?
6
-6
8
-8
7.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Na expressão a^n, o que representa o "a"?
O expoente
A base
O resultado
O fator
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