Question

Simplify:

(a + b) (2a - 3b + c) - (2a - 3b) (c).​

Answer 1

Step-by-step explanation:

(a+b)(2a-3b+c)-(2a-3b)c

a(2a-3b+c) +b(2a-3b+c) -[ 2a(c) - 3b(c)]

2a2 - 3ab+ ac + 2ab - 3b2 +bc - 2ac + 3bc

=2a² -ab -ac+4bc-3b²

Answer 2

a(2a-3b+c)+b(2a-3b+c)-c(2a-3b)

2a^2-3ab+ac+2ab-3b^2+bc-2ac-3bc

2a^2-3b^2-3ab+2ab+bc-3bc+ac-2ac

2a^2-3b^2-ab-2bc-ac

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