गुणनखण्ड ज्ञात कीजिए : `3x^(2)-x-4`.

Explanation

`3x^(2)-x-4`.
यहाँ a=3 , b =- 1 , c = - 4
p + q = b = - 1
pq = ac = 3 (-4) = - 12
`-12= - 4xx3`
`-1=-4+3`
`therefore3x^(2)-x-4=3x^(2)-4x+3x-3`
`=3x^(2)+3x-4x-4`
`=3x(x+1)-4(x+1)`
`=(x+1)(3x-4)`.