Intro
2x Dm A# F C
[Verse 1]
Dm A#
If you try to solve a quadratic equation,
F C
I promise you: It's possible without any frustration,
Dm A#
if you take everything, move it to one side,
F C
sort by x squared, x and the rest. Alright.
Dm A#
Take the coefficients, name them a, b and c
F C
and if you know the right formula, you will see
Dm A#
that you get the solution in the very next step.
F C
Just sing this song in your head:
[Chorus]
Dm A# F C
Negative b plus or minus the square root of
Dm A# F C
b squared minus 4ac over 2a
[Verse 2]
Dm A#
Okay. Let's start with our equation and our job is going to be
F C
solving this now for x, so let's take minus c,
Dm A#
multiply by 4a and if you now add b squared
F C
it all looks way to complicated, but don't be scared.
Dm A#
Just take a close look to the left side and you'll see:
F C
There's a binomial formula with 2ax and b,
Dm A#
so altogether this is the square of 2ax+b
F C
and now we have only one x, so the next step will be
Dm A#
to get rid of the square and if the right side is not negative,
F C
the square root must be one solution, but there's an alternative,
Dm A#
'cause minus the square root yields the same if you square it,
F C
so we write "plus minus" and now we are at the point, where it
Dm A#
only takes two more steps to solve it for x
F C
and if you look to the left side, you know what will be next:
Dm A# F C
Subtraction of b and division by 2a is giving us our formula for x. Okay. And it's
[Chorus]
Dm A# F C
Negative b plus or minus the square root of
Dm A# F C
b squared minus 4ac over 2a
Dm A# F C
Negative b plus or minus the square root of
Dm A# F C
b squared minus 4ac over 2a
Em C G D
Negative b plus or minus the square root of
Em C G D
b squared minus 4ac over 2a
Em C G D
Negative b plus or minus the square root of
Em C G D
b squared minus 4ac over 2a