Question

2. Simplify:
(i) (a +1)(2a-1)-(3a-1)(a+3)
(ii) (3b+2)(5b-4)-(b-5)(3b+2)
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Answer 1

Answer:

(i)a^2-7a+2

(ii)12b^2+11b+2

Step-by-step explanation:

(i) 2a^2-a+2a-1-[3a^2+9a-a-3]

=2a^2+a-1-3a^2-8a+3

=-a^2-7a+2

(ii) 15b^2-12b+10b-8-[3b^2+2b-15b-10]

=15b^2-2b-8-3b^2+13b+10

=12b^2+11b+2

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Answer 2

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