Question

50*(-0,2)²-25*(-0,2)³-8,7 (подробно плз)

Answer 1

Вот подробное решение))

Answer 2

Sure, I'll break down the expression step by step:

1. Start by substituting the value of (-0.2) for the variable 'x' in the expression.

2. Evaluate (-0.2)²: (-0.2)² = (-0.2) * (-0.2) = 0.04

3. Evaluate (-0.2)³: (-0.2)³ = (-0.2) * (-0.2) * (-0.2) = -0.008

4. Now, substitute these values back into the original expression: 50 * 0.04 - 25 * (-0.008) - 8.7

5. Perform the multiplications: 50 * 0.04 = 2 25 * (-0.008) = -0.2

6. Now, the expression becomes: 2 - (-0.2) - 8.7

7. Simplify the subtraction of a negative number: 2 + 0.2 - 8.7 = -6.5

So, the result of the expression 50*(-0.2)² - 25*(-0.2)³ - 8.7 is -6.5.