Question

Solve the equation, , using the quadratic formula.

Answer 1

Answer:

$\frac{-5+/-\sqrt{42} }{8}$

Step-by-step explanation:

The quadratic formula is $x=\frac{-b+/-\sqrt{b^2-4ac} }{2a}$. Here a=4, b=5, and c=-1.

Substitute and you'll have:

$x=\frac{-b+/-\sqrt{b^2-4ac} }{2a} =\frac{-5+/-\sqrt{5^2-4(4)(-1)} }{2(4)}=\frac{-5+/-\sqrt{25+17} }{8)}$

$\frac{-5+/-\sqrt{42} }{8}$