Question

Упростите выражения(с распиской

Answer 1

$- 4m {}^{3} n {}^{5} \times 5m {}^{4} n {}^{2} = ( - 4 \times 5) \times m {}^{3} \times m {}^{4} \times n {}^{5} \times n {}^{2} = ( - 4 \times 5) \times m {}^{3 + 4} \times n {}^{5 + 2} = - 20m {}^{7} n {}^{7}$

$8x {}^{3} y {}^{4} \times ( - \frac{1}{2} x {}^{2}y {}^{5} ) {}^{3} = 8x {}^{3} y {}^{4} \times- \frac{1}{2} x {}^{2}y {}^{5} \times - \frac{1}{2} x {}^{2}y {}^{5} \times - \frac{1}{2} x {}^{2}y {}^{5} = - x {}^{9} y {}^{19}$

$( - 2m {}^{7} n {}^{2} ) {}^{4} = ( - 2) \times ( - 2) \times ( - 2) \times ( - 2) \times m {}^{7} \times m {}^{7}\times m {}^{7}\times m {}^{7} \times n {}^{2} \times n {}^{2} \times n {}^{2} \times n {}^{2} = 16 \times m {}^{7 + 7 + 7 + 7} \times n {}^{2 + 2 + 2 + 2} = 16m {}^{28} n {}^{8}$

Answer 2

ответ: ответ во вложенном файле