(X-4)(x+4)=x^2-16

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Solution for (X-4)(x+4)=x^2-16 equation: 



(X-4)(X+4)=X^2-16

We move all terms to the left:

(X-4)(X+4)-(X^2-16)=0

We use the square of the difference formula

X^2-(X^2-16)-16=0

We get rid of parentheses

X^2-X^2+16-16=0

We add all the numbers together, and all the variables

=0

X=0/1

X=0

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