Question

70 x (2^2 - 2^1 + 5^1) =
Como e que arma??

Answer 1

$\geqslant resolucao \\ \\ \\ = 70 \: ( \: 2 {}^{2} - 2 {}^{1} + 5 {}^{1} \: ) \\ \\ = 70 \: ( \: 4 - 2 + 5 \: ) \\ \\ = 70 \: ( \: 2 \: + 5 \: ) \\ \\ = 70 \times 7 \\ \\ = 490 \\ \\ > < > < > < > < > < > < > < >$

Answer 2

$70*(2^2-2^1+5^1)$

$70*(4-2+5)$

$70*(2+5)$

$70*7$

$490$