(x-4)(x-1)=(x+9)(x+9)

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Solution for (x-4)(x-1)=(x+9)(x+9) equation: 



(x-4)(x-1)=(x+9)(x+9)

We move all terms to the left:

(x-4)(x-1)-((x+9)(x+9))=0

We multiply parentheses ..

(+x^2-1x-4x+4)-((x+9)(x+9))=0



We calculate terms in parentheses: -((x+9)(x+9)), so:

(x+9)(x+9)

We multiply parentheses ..

(+x^2+9x+9x+81)

We get rid of parentheses

x^2+9x+9x+81

We add all the numbers together, and all the variables

x^2+18x+81

Back to the equation:

-(x^2+18x+81)



We get rid of parentheses

x^2-x^2-1x-4x-18x+4-81=0

We add all the numbers together, and all the variables

-23x-77=0

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

-23x=77

x=77/-23

x=-3+8/23

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