15625 _______ 2 \/ x + 4 - x - 3*x + 7
(sqrt(x + 4))^15625 - x^2 - 3*x + 7
15625/2 15625*(x + 4) -3 - 2*x + -------------------- 2*(x + 4)
15621/2 244109375*(4 + x) -2 + ------------------------ 4
15619/2 3813232546875*(4 + x) ---------------------------- 8