Question

Factorise: (3a-1)^2-6a+2

Answer 1

$9a {}^{2} + 1 - 6a - 6a + 2$
$9a {}^{2} - 12a + 3$
$9a {}^{2} - 9a + 3a + 3 \\ 9a(a - 1) + 3(a + 1) \\( a - 1)(9a + 3)$
Hope this helps you

Answer 2

= (3a-1)² - (3a-1) * 2
= 9a² + 1 - 6a - 6a + 2
= 9a² + 3 - 12a
= 3(3a² +1 - 4a)