solving quadratic equations: x^2 - 4x - 5 = 0

[loretta195]

1) solve using quadratic equation

x^2 - 4x - 5 = 0

2) solve using quadratic formula

x^2 - 4x - 5 = 0

 

[skeeter]

solve using quadratic equation ?
x² - 4x - 5 = 0
(x - 5)(x + 1) = 0


using the quadratic formula ...
a = 1, b = -4, c = -5
\(\displaystyle \L x = \frac{4 \pm \sqrt{(-4)^2 - 4(1)(-5)}}{2(1)}\)

 

[stapel]

1) solve using quadratic equation

Were the instructions for this one perhaps something like "Solve the quadratic by factoring"...?

Thank you.

Eliz.