Question

resolva as operações:

(2.3)² = 2².3²
(6÷3)²=6²÷3²

$( \frac{10}{5} ) {}^{2} = \frac{10 {}^{2} }{5 {}^{2} }$
obrigada :))
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Answer 1

Resposta:

( 2 . 3 )² - 2² . 3²

= 6 - 2² . 3²

= 6 - 4 . 3²

= 6 - 4 . 9

= 6 - 36

= - 30

______________

( 6 ÷ 3 )² - 6² ÷ 3²

= ( 6/3 )² ( -6/3 )²

= ( 6/3 . -6/3 )²

= ( - 4 )²

= 4²

= 16

______________

( 10/5 )² - 10²/5²

= 2² - 10²/5²

= 2² - 2²

= 4 - 4

= 0