Question 505766
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Use Pythagoras.


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ x^2\ +\ (x\ +\ 7)^2\ = 13^2]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ x^2\ +\ x^2\ +\ 14x\ +\ 49\ =\ 169]


Collect like terms, put the equation into standard quadratic form, and solve.


Remember to discard any negative root since you are solving for a positive measure of length.


John
*[tex \LARGE e^{i\pi} + 1 = 0]
My calculator said it, I believe it, that settles it
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