limit x mendekati tak hingga akar x²+7x-5 - (x + 4)

jawab

limit(x->~) √(x²+7x - 5) - (x +4)

limit(x->~) √(x² + 7x - 5) - √(x² +8x + 16)
a=p = 1
b = 7
q = 8

Limit = b - q / (2√a) = (8-7)/(2)   = 1/2