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प्रश्न
Factorise the following expression.
a3 + a2 + a + 1
योग
उत्तर
We have,
a3 + a2 + a + 1
= (a3 + a2) + (a + 1)
= a2(a + 1) + 1(a + 1)
= (a + 1)(a2 + 1)
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अध्याय 7: Algebraic Expression, Identities and Factorisation - Exercise [पृष्ठ २३४]
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