Question

4(a-1)^2-4(a-1)-3. factorise

Answer 1

$4 {(a - 1)}^{2} - 4(a - 1) - 3 \\ 4 {a}^{2} + 4 - 8a - 4a + 4 - 3 \\ 4 {a}^{2} - 12a + 5 \\ 4 {a}^{2} - 2a - 10a + 5 \\ {2a(2a - 1) - 5(2a - 1) \\ (2a - 5)(2a - 1)}$
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