Question

Factorise by splitting middle term : 3a^2 - 1 - 2a

Answer 1

Step-by-step explanation:

3a^2 - 2a - 1

= 3a^2 - 3a + a - 1

= 3a(a - 1)+1(a - 1)

= (a-1)(3a+1)

Answer 2

• 3a^2-2a-1 3a^2+1a-3a-1 1a(3a+1)-1(3a+1) a=1,a=-1/3