x^2-5x+4=x^2-1

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Solution for x^2-5x+4=x^2-1 equation: 



x^2-5x+4=x^2-1

We move all terms to the left:

x^2-5x+4-(x^2-1)=0

We get rid of parentheses

x^2-x^2-5x+1+4=0

We add all the numbers together, and all the variables

-5x+5=0

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

-5x=-5

x=-5/-5

x=1

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