Question

Find the factors of 2x2+x-1​

Answer 1

ANS =2 X 2+ X -1 = 4+X-1=X= 1-4=-3

x =-3

Answer 2

2x^2+x-1

using formula

-b+-√b^2-4ac/2a

a=2

b=1

c=-1

using values in the formula,we get

-1+-√(1)^2-4*2*-1/2*2

-1+-√1+8/4

-1+-√9/2

-1+-3/2

now,

-1+3/2

2/2=1

and,

-1-3/2

-4/2

-2

factors are1 and -2