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