Question

0.8*(-7)^4-0.3*(-7)^2+45

Answer 1

Ответ:

1951,1

Пошаговое объяснение:

0.8*(-7)^4-0.3*(-7)^2+45=0,8·2401-0,3·49+45=1920,8-14,7+45=1906,1+45=1951,1

Answer 2

Ответ:

1920,8-14,7+45=1951,1

Пошаговое объяснение:

(-7)⁴=2401

2401*0,8=1920,8

(-7)²=49

49*0,3=14,7

Answer 3

To solve this expression, follow the order of operations (PEMDAS/BODMAS):

1. Perform calculations inside parentheses: None in this case.
2. Evaluate exponents: (-7)^4 means (-7) raised to the power of 4.
3. Perform multiplication and division from left to right.
4. Perform addition and subtraction from left to right.

Let's solve the expression step by step:

1. (-7)^4 means (-7) * (-7) * (-7) * (-7) = 2401
2. (-7)^2 means (-7) * (-7) = 49

Now, we have:

0.8 * 2401 - 0.3 * 49 + 45

3. 0.8 * 2401 = 1920.8
4. 0.3 * 49 = 14.7

Now the expression becomes:

1920.8 - 14.7 + 45

5. Perform addition and subtraction:

1920.8 - 14.7 = 1906.1 1906.1 + 45 = 1951.1

The final result is 1951.1.