Answered: 5a^2+2a-12)(9a^2+8a-4) so the answer…

5a^2+2a-12)(9a^2+8a-4) so the answer to this problem is 14a+10a-16 but I keep getting 45a^4+58a^3-216a+48 as the answer... Please help

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter8: Polynomials

Section8.5: Using The Distributive Property

Problem 57PFA

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Concept explainers

Polynomials

Try substituting 1. You will get 6 and not 0. Try other real values also. What About -2? Let us check.

Question

(5a^2+2a-12)(9a^2+8a-4)

so the answer to this problem is 14a+10a-16 but I keep getting 45a^4+58a^3-216a+48 as the answer... Please help

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