If (5 - x)/(7 + x) = x, what is the value of x^2 + 8x - 5?  Answers.
A) -4
B) -3
C) -2
D) -1
E) 0
(5-x) = x*(7+x)   (5-x) = 7x+x^2   0 = x^2+8x-5   The answer is 0.
<result>E</result>
If (5 - x)/(7 + x) = x, what is the value of x^2 + 8x - 5?