X^2-4x+2/x^2-2x-15 hope this helps!
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It’s b: duct cell, epithelial tissue, kidney, excretory system, baby
explanation: my moms a nurse :)
So the distance formula is
. Using this, our equation is
and we can solve for it as such:

As we see with this radical, the sum that's under it is 15^2 + 8^2, or the third option.