factorise 3x square -1 -2x with explanation
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3x^2 -2x-1= 0
Using middle terms splitting
3x^2-3x+x-1=0
3x(x-1) +1(x-1)=0
(3x+1)(x-1) = 0
Therefore,
x = -1/3, 1
Using middle terms splitting
3x^2-3x+x-1=0
3x(x-1) +1(x-1)=0
(3x+1)(x-1) = 0
Therefore,
x = -1/3, 1
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