Question

помогите, пожалуйста, срочно​

Answer 1

Задание 1.

$1000a {}^{9}b {}^{6} = (10a {}^{3}b {}^{2}) {}^{3}$

Задание 2.

$15a {}^{2} b times 25ab {}^{2} = 375a {}^{3} b {}^{3}$

при а = 0,25; b = 4

$375 times (0.25) {}^{3} times 4 {}^{3} = \ = 375 times 0.015625 times 64 = \ = 375$

Задание 3.

$2.4 times 10 {}^{3} + 1.2 times 10 {}^{2} = 24 times 10 {}^{2} + 1.2 times 10 {}^{2} = 10 {}^{2} times (24 + 1.2) = 25.2 times 10 {}^{2} = 2.52 times 10 {}^{3} \\ 2.4 times 10 {}^{3} - 1.2 times 10 {}^{2} = 24 times 10 {}^{2} - 1.2 times 10 {}^{2} = 10 {}^{2} times (24 - 1.2) = 22.8 times 10 {}^{2} = 2.28 times 10 {}^{3} \ \ 2.4 times 10 {}^{3} times 1.2 times 10 {}^{2} = 2.4 times 1.2 times 10 {}^{2 + 3} = 2.88 times 10 {}^{5} \ \ frac{2.4 times 10 {}^{3} }{1.2 times 10 {}^{2} } = frac{2 times 10}{1} = 20$