Question

$(8×10 {}^{3} ){}^{2} \times (12 \times 10 {}^{ - 7} )$
помогите пожалуйста​

Answer 1

Ответ:

$(8 \times 10 {}^{3} ) {}^{2} \times (12 \times 10 {}^{ - 7} ) = 8 {}^{2} \times (10 {}^{3} ) \times 12 \times 40 {}^{ - 7} = 64 \times 10 {}^{6} \times 12 \times \frac{1}{40 {}^{7} } = 6.4 \times 10 {}^{7} \times 12 \times \frac{1}{2 {}^{14} \times 10 {}^{7} } = \frac{32}{5} \times 12 \times \frac{1}{2 {}^{14} } = \frac{2 {}^{5} }{5} \times 12 \times \frac{1}{2 {}^{14} } = \frac{1}{5} \times 12 \times \frac{1}{2 {}^{9} } = \frac{12}{5 \times 2 {}^{9} } = \frac{12}{5 \times 512} = \frac{3}{5 \times 128} = \frac{3}{640}$