Question

Solve using the quadratic formula:
x^2+4x-11=0

Answer 1

The quadformula is just putting the correct numbers into a calculator

ax^2 +bx +c

-b +- sqrt(b^2 +- 4ac)
--------------------
2a

Answer 2

without the typos that is :)

-b +- sqrt(b^2 - 4ac)
--------------------
2a

Answer 3

if i did it right in me head ... big if:

x = -2 +- sqrt(15)

Answer 4

That is correct.

Answer 5

Thank you so much! I got the same answer but wasn't sure if I was right.