What is the product of a+3 and - 2a2+15a+6b2?

-2a3+9a2+45a+24b2

-2a3+21a2+45a+24b2

-2a3+9a2+45a+6ab2+18b2

-2a3+21a2+45a+6ab2+18b2

c. 2a3+9a2+45a+6ab2+18b2

Step-by-step explanation:

(a+3) + (-2a2+15a+6b2)

Using distributed p. with and a and 3

a (-2a2) + a (15a) + a (6b2) and 3 (-2a2) + 3 (15a) + 3 (6b2)

= - -2a3 + 15a2 + 6ab2 = - 6a2 + 45a + 18b2

Now add like terms and put in standard form.

15a2 + (-6a2) = 9a2

And equals

-2a3 + 9a2+45a+6ab2+18b2

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