Question 171507
Given the triange with a hypotenuse = 20 , and one leg = X + 8 , and the other leg = X
Approximate to the nearest foot how many feet of walking distance a person saves by cutting across the lawn instead of walking on the side walk. 
I know you use pythagorean theorem to get {2x^2 + 16x -336 = 0}
then simplify and get 2(x^2 + 8x - 168) = 0
After this you use quadratic equation and get -4 +- ^736 over 1
I dont know how to get the whole number after this
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You get -4 + sqrt(184) and
-4 - sqrt(184).  It's sqrt(736)/2
Since it's a length, ignore the negative answer and use
-4 + sqrt(184) = ~ 9.564 feet
or 10' to the nearest foot.
The 2 legs are 10 and 18.  That's 8' more than the hypotenuse.