Question

91 O valor da expressão
${10}^{ - 3} \times {2}^{6} \times {2}^{ - 5} \times {10}^{4}$
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Answer 1

Olá

$10 {}^{ - 3} \times 2 {}^{6} \times 2 {}^{ - 5} \times 10 {}^{4} \\ 10 {}^{ - 3 + 4} \times 2 {}^{6 - 5} \\ 10 {}^{1} \times 2 {}^{1} \\ 10 \times 2 \\ 20$

elimina os expoentes 1

Answer 2

Oie, Td Bom?!

$= 10 {}^{ - 3} \: . \: 2 {}^{6} \: . \: 2 {}^{ - 5} \: . \: 10 {}^{4}$

$= 10 {}^{ - 3 +4 } \: . \: 2 {}^{6 + ( - 5)}$

$= 10 {}^{ - 3 + 4} \: . \: 2 {}^{6 - 5}$

$= 10 {}^{1} \: . \: 2 {}^{1}$

$= 10 \: . \: 2$

$\boxed { = 20}$

Att. Makaveli1996