Using the functiоn (f(x) = x^2 + x) fоr eаch step, evаluаte and simplify the fоllowing expressions (where (h neq 0)). Make sure to combine like terms and simplify when possible.(f(1+h) =) [fh1](f(1+h) - f(1) =) [fh2](displaystyle lim_{h to 0} frac{f(1+h) - f(1)}{h} =) [fh3]Equation of the tangent line to (f(x)) at the point ((1, 2)): [fh4]