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9 January, 21:27

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

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Answers (1)
  1. 9 January, 22:13
    0
    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

    Trust me I took the test and got 100%

    Your welcome,
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