Question

Найдите значение выражения 2,5*2⁴-7²

Answer 1

2,5*2^4-7^2 = 40-49 = -9

Answer 2

$2.5 \times {2}^{4} - {7}^{2}$=-9
$1) \: 2 \times 2 \times 2 \times 2 = 16$
$2)7 \times 7 = 49$
$3)2.5 \times 16 = 40$
$4) \: 40 - 49 = - 9$