X2=(x+27)(x-15)

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Solution for X2=(x+27)(x-15) equation: 



X2=(X+27)(X-15)

We move all terms to the left:

X2-((X+27)(X-15))=0

We add all the numbers together, and all the variables

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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