x*x=(x+27)*(x-15)

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Solution for x*x=(x+27)*(x-15) equation: 



x*x=(x+27)(x-15)

We move all terms to the left:

x*x-((x+27)(x-15))=0

Wy multiply elements

x^2-((x+27)(x-15))=0

We multiply parentheses ..

x^2-((+x^2-15x+27x-405))=0



We calculate terms in parentheses: -((+x^2-15x+27x-405)), so:

(+x^2-15x+27x-405)

We get rid of parentheses

x^2-15x+27x-405

We add all the numbers together, and all the variables

x^2+12x-405

Back to the equation:

-(x^2+12x-405)



We get rid of parentheses

x^2-x^2-12x+405=0

We add all the numbers together, and all the variables

-12x+405=0

We move all terms containing x to the left, all other terms to the right

-12x=-405

x=-405/-12

x=33+3/4

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