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2016-04-09T21:14:26+05:30
3x^-x-4=0
3x^-4x+3x-4=0
3x^+3x-4x-4=0
3x(x+1)-4(x+1)=0
(3x-4)(x+1)=0
3x-4=0   3x=4     x=4/3
x+1=0    x=-1  
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Heyy!!! ^ means square.
yeah i gt it thnks
2016-04-09T21:22:40+05:30
3x² - x - 4
= 3x² + 3x - 4x - 4
= 3x(x+1) -4(x+1)
= (3x - 4 )(x + 1)

Zeros are -
• 3x - 4 = 0
x = 4/3

• x + 1 = 0
x = -1

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