Question

The root of equation 7x²+x-1=0

Answer 1

Answer:

It is of the form ax^2+bx+c=0

Then from the formula

x= -b+√b^2-4ac/2a and

-b-√b^2-4ac/2a

So, x= -1+√(1)^2-4(7)(-1)/2(7)

and -1-√(1)^2-4(7)(-1)/2(7)

=>x= (-1+√29)/14 and (-1-√29)/14 are the roots