Factorise 3a^ - 1 - 2a
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3a^2-3a+a-1
3a(a-1)+1(a-1)
(a-1)(3a+1)
is your answer
3a(a-1)+1(a-1)
(a-1)(3a+1)
is your answer
Answered by
0
3a^2-2a-1=0
3a^2-3a+a-1=0
3a(a-1)+1(a-1)=0
(3a+1)(a-1)=0
3a+1=0 or a-1=0
3a=-1 or a=1
a=-1/3 or a=1
3a^2-3a+a-1=0
3a(a-1)+1(a-1)=0
(3a+1)(a-1)=0
3a+1=0 or a-1=0
3a=-1 or a=1
a=-1/3 or a=1
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