Question

- a^4+2a^3-4a^4+2a^2-3a^2если а=-3

Answer 1

Ответ:

-468

Пошаговое объяснение:

-5a⁴ + 2a³ - a² = -a²(5a² - 2a + 1) = -9(45 + 6 + 1) = -9 * 52 = -468

Answer 2

To evaluate the expression when a = -3, we substitute -3 in place of "a" in the expression:

(-3)^4 + 2(-3)^3 - 4(-3)^4 + 2(-3)^2 - 3(-3)^2

Now let's simplify each term:

(-3)^4 = 81 (-3)^3 = -27 (-3)^2 = 9

Substituting these values:

81 + 2(-27) - 4(81) + 2(9) - 3(9)

Simplifying further:

81 - 54 - 324 + 18 - 27

Combining like terms:

(81 - 324) + (18 - 54 - 27)

-243 + (-63)

Adding the terms:

-306

Therefore, when a = -3, the expression a^4 + 2a^3 - 4a^4 + 2a^2 - 3a^2 evaluates to -306.