Question

multiply 4a³ + 2a² + a-3 and 2 + a-5a²
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Answer 1

Answer:

9a^3 -6a^4 - 20a^5 - 10^4 - a - 6

Step-by-step explanation

(4a^3 + 2a^2)×(2 + a - 5a^2)

=4a^3(2+a - 5a^2) + 2a^2(2+a- 5a^2) + a(2+ a- 5a^2) -3(2+a-5a^2)

=12a^3 + 4a^4 - 20a^5 + 4a^2 + 2a^3 - 10a^4 + 2a+ a^2 - 5a^3 - 6 -3a - 15a^2

=9a^3 -6a^4 - 20a^5 - 10^4 - a - 6