Question

plz help me to solve this Q.​

Answer 1

Answer:

Step-by-step explanation:

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

When x=1 then,

P(1)=3×1^2-1-4

P(1)=3-5

P(1)=-2

So 1 is not a root of this equation

When x=-1 then,

P(-1)=3×(-1)^2-(-1)-4

P(-1)=3+1-4

P(-1)=4-4

P(-1)=0

So -1 is the root of the given equation.