Question

решите по действиям.........

Answer 1

$6 {}^{3} - 2 \times 4 {}^{3} - 1 {}^{3} = 216 - 2 \times 64 - 1 = 216 - 128 - 1 = 87$
$15 {}^{2} \div (13 {}^{2} - 124) = \frac{15 {}^{2} }{13 {}^{2} - 124} = \frac{225}{169 - 124} = \frac{225}{45} = 5$