factorise the following 3 x square - 1 x minus 4
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6
= 3x^2 - 1x - 4
= 3x^2 + 3x - 4x - 4
= 3x(x + 1) - 4(x + 1)
= (x + 1) (3x - 4)
= 3x^2 + 3x - 4x - 4
= 3x(x + 1) - 4(x + 1)
= (x + 1) (3x - 4)
Answered by
1
3×(-1)=x-4
3×1=x-4
3xx=-1+4
3x=3
x=3/3
x=1
3×1=x-4
3xx=-1+4
3x=3
x=3/3
x=1
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