Question

Lt ( quad frac{x^{2}-a x+b}{x-1}=5 )
( vec{m} )
( 15+frac{x(x-a)}{1}+1 )
Wr
LHon'tal
( =lim _{x rightarrow 1} frac{2 x-9}{1}=5 )
( therefore quad 2 - a = 5 quad Rightarrow 1 longdiv { a = - 3 } )
".
( fleft(frac{x^{2}+3 x+b}{x-1}=5right. )
( 9+b=-7 )
( begin{aligned} Rightarrow quad frac{x^{2}-x+4 x+b}{x-1} & Rightarrow x+frac{4 n+1}{n-1} &=b+4=end{aligned} )

# -ax+b -.68 If Lim =5, then a + b is equal to (1)-7 (2) - 4 (3) 5 is equal

Solution