Question

Обчислити раціональним способом 2,5×(-7)×(-8)×4

Answer 1

Ответ:

560

Пошаговое объяснение:

умножим сначала 2,5 на 4 = 10

-7*(-8)=56

10*56= 560

Answer 2

I can help you with your math problem. Here is the detailed solution:

To calculate 2.5×(-7)×(-8)×4 rationally, we can use the following steps:

- First, we can multiply 2.5 and -7 using the distributive property of multiplication over addition: $$2.5×(-7) = (2+0.5)×(-7) = 2×(-7) + 0.5×(-7) = -14 - 3.5 = -17.5$$ - Next, we can multiply -17.5 and -8 using the same property: $$-17.5×(-8) = (-17-0.5)×(-8) = -17×(-8) - 0.5×(-8) = 136 + 4 = 140$$ - Finally, we can multiply 140 and 4 using the commutative property of multiplication: $$140×4 = 4×140 = 4×(100+40) = 4×100 + 4×40 = 400 + 160 = 560$$

Therefore, the final answer is 560.Ответь+подробно.++Обчислити+раціональним+способом+2,5×(-7)×(-8)×4+