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
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Answers & Comments
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