Intro
2x Bm G D A
[Verse 1]
Bm G
If you try to solve a quadratic equation,
D A
I promise you: It's possible without any frustration,
Bm G
if you take everything, move it to one side,
D A
sort by x squared, x and the rest. Alright.
Bm G
Take the coefficients, name them a, b and c
D A
and if you know the right formula, you will see
Bm G
that you get the solution in the very next step.
D A
Just sing this song in your head:
[Chorus]
Bm G D A
Negative b plus or minus the square root of
Bm G D A
b squared minus 4ac over 2a
[Verse 2]
Bm G
Okay. Let's start with our equation and our job is going to be
D A
solving this now for x, so let's take minus c,
Bm G
multiply by 4a and if you now add b squared
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it all looks way to complicated, but don't be scared.
Bm G
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,
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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
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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,
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'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
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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:
Bm G D A
Subtraction of b and division by 2a is giving us our formula for x. Okay. And it's
[Chorus]
Bm G D A
Negative b plus or minus the square root of
Bm G D A
b squared minus 4ac over 2a
Bm G D A
Negative b plus or minus the square root of
Bm G D A
b squared minus 4ac over 2a
C#m A E B
Negative b plus or minus the square root of
C#m A E B
b squared minus 4ac over 2a
C#m A E B
Negative b plus or minus the square root of
C#m A E B
b squared minus 4ac over 2a