Question

Solve the equation, , using the quadratic formula.

Answer 1

`(-5+/-√(42) )/(8)`

Explanation:

The quadratic formula is
`x=(-b+/-√(b^2-4ac) )/(2a)`. Here a=4, b=5, and c=-1.

Substitute and you'll have:

`x=(-b+/-√(b^2-4ac) )/(2a) =(-5+/-√(5^2-4(4)(-1)) )/(2(4))=(-5+/-√(25+17) )/(8))`

`(-5+/-√(42) )/(8)`