Question

factorise a^2 - 6a + 8​

Answer 1

Step-by-step explanation:

${a}^{2} - 6a + 8$

$= {a}^{2} - 4a - 2a + 8$

$= a( a - 4) - 2(a - 4)$

$= (a - 2)(a - 4)$

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Answer 2

Step-by-step explanation:

${a}^{2} - 6a + 8 \\ {a}^{2} - 2a - 4a + 8 \\ a(a - 2) - 4(a - 2) \\ (a - 2)(a - 4) \\ a = 2 \\ a = 4$

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