factorise 3xraise to the power 2 -x-4
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Answered by
3
3x^2-x-4
= 3x^2-(4-3)x-4
= 3x^2-4x+3x-4
= 3x^2+3x-4x-4
= 3x(x+1)-4(x+1)
= (3x-4) (x+1)
= 3x^2-(4-3)x-4
= 3x^2-4x+3x-4
= 3x^2+3x-4x-4
= 3x(x+1)-4(x+1)
= (3x-4) (x+1)
Answered by
0
Here goes,
3x2 - x - 4
3x2 - 4x + 3x - 4
x(3x - 4) + 1(3x - 4)
(x + 1)(3x - 4)
Therefore, x = - 1 , 4/3
Hope this helps... Plz mark as brainliest..!
reemaanver999:
Plz mark as brainliest..!
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