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प्रश्न
Factorise the following by taking out the common factor
a3 – 3a2 + a – 3
उत्तर
a2 – 3a2 + a – 3 = a2(a – 3) + 1(a – 3) ...[∴ Grouping the terms suitably]
= (a – 3)(a2 + 1)
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