What is the product of a+3 and -2a2+15a+6b2? O-2a3+9a2+45a+2462 O-2a3+21a2+45a+2462 O -2a3+9a2+45a+baba+1862 O-2a3+2

Question

What is the product of a+3 and -2a2+15a+6b2?
O-2a3+9a2+45a+2462
O-2a3+21a2+45a+2462
O -2a3+9a2+45a+baba+1862
O-2a3+21a2+45a+6ab2+1862

in progress 0
Kinsley 2 weeks 2021-09-09T07:58:20+00:00 2 Answers 0

Answers ( )

    0
    2021-09-09T07:59:33+00:00

    Answer:

    c: -2a^3+9a^2+45a+6ab^2+18b^2

    Step-by-step explanation:

    i just did on edgen 2020

    0
    2021-09-09T08:00:05+00:00

    Answer: -2a^3 + 9a^2 + 45a + 18b^2 + 6ab^2

    Step-by-step explanation:

    (a + 3) * (-2a^2 + 15a + 6b^2)

    We open the brackets with (a + 3)

    a ( -2a^2 + 15a + 6b^2) + 3(-2a^2 + 15a + 6b^2)

    Opening the brackets

    = a * -2a^2 = -2a^3

    a * 15a = 15a^2

    a * 6b^2 = 6ab^2

    3 * -2a^2 = -6a^2

    3 * 15a = 45a

    3 * 6b^2 = 18b^2

    Let’s arrange those values weve gotten together ,don’t forget the signs each carry

    = -2a^3 + 15a^2 + 6ab^2 – 6a^2 + 45a + 18b^2

    Collect the like terms

    = -2a^3 + 15a^2 – 6a^2 + 6ab^2 + 45a + 18b^2

    = -2a^3 + 9a^2 + 6ab^2 + 45a + 18b^2

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45:7+7-4:2-5:5*4+35:2 =? ( )