Question

Solve by using quadratic formula 3x2-x-4 =0

Answer 1

Step-by-step explanation:

3x^2-x-4=0

3x^2-(4-3)x-4=0

3x^2-4x+3x-4=0

3x^2+3x-4x-4=0

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

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

So,

x=-1

or,

x=4/3

Answer 2

3x^2-x-4=0

splitting middle term

3x^2-4x+3x-4=0

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

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

x=4/3 & x=-1

hence solve

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