Question

A во третей степени - 2а во второй степени=? При а=-3 Помогите

Answer 1

(-3)³-2*(-3)²=-27-2*9=-27-18=-45

Answer 2

а^3-2а^2=(-3)^3-2*(-3)^2=-27-18=-45

^-степень

а^3 - а в третьей степени и т.д.

Answer 3

Calculation of a Cubed Minus 2a Squared

To calculate a cubed minus 2a squared, we need to substitute the value of a into the expression and perform the calculations.

Given that a = -3, we can substitute this value into the expression:

(-3) cubed minus 2(-3) squared

To simplify this expression, we need to calculate the cube of -3 and the square of -3, and then subtract the result of 2 times the square of -3 from the cube of -3.

Let's calculate each part step by step:

1. Cube of -3: (-3) cubed = -3 * -3 * -3 = -27 2. Square of -3: (-3) squared = -3 * -3 = 9 3. Multiply 2 by the square of -3: 2 * 9 = 18 4. Subtract the result of step 3 from the result of step 1: -27 - 18 = -45

Therefore, when a = -3, a cubed minus 2a squared is equal to -45.

Please let me know if you have any further questions!