Question

Factorise the following
1. a³ + 1​

Answer 1

Answer:

${a}^{3} + 1 \\ = {a}^{3 } + {1}^{3} \\ = (a + 1)( {a}^{2} - a + 1) {x}^{3} + 1 \\ = (a + 1)( {a }^{2} - a + 1)$

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