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Question
Factorize the following expressions:
a3 + b3 + a + b
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Solution
= (a3 + b3) +1(a + b)
= (a + b)(a2 - ab + b2) +1(a + b)
= (a + b)(a2 - ab + b2 +1)
∴ a3 + b3 + a + b = (a + b)(a2 - ab + b2 +1)
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