4x(2x-5)=4x.2x-4x.5=4.2.x.x-4.5.x=8^2-20x

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Solution for 4x(2x-5)=4x.2x-4x.5=4.2.x.x-4.5.x=8^2-20x equation: 



4x(2x-5)=4x.2x-4x.5=4.2.x.x-4.5.x=8^2-20x

We move all terms to the left:

4x(2x-5)-(4x.2x-4x.5)=0

We add all the numbers together, and all the variables

4x(2x-5)-(+4x.2x-4x.5)=0

We multiply parentheses

8x^2-20x-(+4x.2x-4x.5)=0

We get rid of parentheses

8x^2-20x-4x.2x+4x.5=0

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