Question

Draw a graph of equation 2x^2 + x - 1

Answer 1

Answer:

the answer is x= -1 , 1/2

Explanation:

Here, 2x^2+x-1=0

or, 2x^2+(2-1)x-1=0

or, 2x^2+2x-x-1=0

or,2x(x+1)-1(x+1)=0

or(x+1)(2x-1)=0

either, x+1=0. nor, 2x-1=0

or, x=-1. or,x=1/2