factorise by grouping method:
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a^3 + a - 3a^2 - 3.
a( a^2 + 1) -3 ( a^2 + 1)
(a-3)(a^2+1) is the required polynomial..
a( a^2 + 1) -3 ( a^2 + 1)
(a-3)(a^2+1) is the required polynomial..
shlokjha2321p9vvui:
thank you your answer helped me a lot
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