Question

(a^2-5)(3+2a)-2a(a^2+4) срочно 100 балов

Answer 1

Упростил выражение

(a^2-5)(3+2a)-2a(a^2+4) = 3a²+2a³-15-10a-2a³-8a = 3a²-15-18a

Answer 2

Sure, let's simplify the expression step by step:

Given expression: (a^2 - 5)(3 + 2a) - 2a(a^2 + 4)

Step 1: Expand the first bracket. (a^2 - 5)(3 + 2a) = 3a^2 + 2a^3 - 15 - 10a

Step 2: Expand the second bracket. -2a(a^2 + 4) = -2a^3 - 8a

Now the expression becomes: (3a^2 + 2a^3 - 15 - 10a) - (2a^3 + 8a)

Step 3: Combine like terms. Group the terms with the same power of 'a': (2a^3 - 2a^3) + (3a^2 - 10a) + (-15 - 8a)

The first term with 'a^3' cancels out.

Step 4: Simplify further. 3a^2 - 10a - 15 - 8a

Step 5: Combine like terms again. 3a^2 - 18a - 15

The simplified expression is: 3a^2 - 18a - 15

If you have any other questions or need further assistance, feel free to ask!