1.

Factories 3 x square _ x _ 4

Answer»

Answer:

given 3x²-x-4

let it be EQUAL to 0

so 3x²-x-4=0

now by splitting middle term we get

3x² - 4x + 3X -4= 0

or

3x² + 3x -4x -4 =0

on taking terms common

3x(x+1) -4(x+1) =0

(3x-4) (x+1) =0

HENCE it is solution

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