Question

RESOLVA AS EXPRESSÕES:


1) (−5)² − (−9)² ∶ (−3)³ − 7 X (−1)⁴ =


2) −3 X (−4)³ + (−5 − 13)⁰ − [(−2)⁷ : (+4)² − 13] =​

Answer 1

(-5)² - (-9)² ÷ (-3)³ - 7 × (-1)⁴.

25 - 81 ÷ (-27) - 7 × 1.

25 - (-3) - 7.

25 + 3 - 7 = 21.

-3 × (-4)³ + (-5 - 13)⁰ - [(-2)⁷ ÷ 4² - 13].

-3 × (-64) + 1 - [(-128) ÷ 16 - 13].

-3 × (-64) + 1 - (-21).

192 + 1 + 21 = 214.