simplify: (3a+ 4) (2a-3) + (5a-4) (a+2)
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59
(3a+4)(2a-3)+(5a-4)(a+2)
=(3a+4)2a-3 (3a+4)+(5a-4)a+2 (5a-4)
=6a^2+8a-9a-12+5a^2-4a+10a-8
=11a^2+5a-20
=(3a+4)2a-3 (3a+4)+(5a-4)a+2 (5a-4)
=6a^2+8a-9a-12+5a^2-4a+10a-8
=11a^2+5a-20
Answered by
21
=6a2-9a+8a-12+5a2+10a-4a-8
=11a2+5a-20
=11a2+5a-20
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