Subtract. StartFraction x squared plus 4 x Over x squared plus 6 x plus 5 EndFraction minus StartFraction x squared minus 4 Over x squared plus 6 x plus 5 EndFraction Question content area bottom Part 1 Select the correct choice below and fill in any answer boxes within your choice. ​(Simplify your answer. Use integers or fractions for any numbers in the expression. Use a comma to separate answers as​ needed.) A. StartFraction x squared plus 4 x Over x squared plus 6 x plus 5 EndFraction minus StartFraction x squared minus 4 Over x squared plus 6 x plus 5 EndFraction equals    enter your response here​, x not equals nothing    B. StartFraction x squared plus 4 x Over x squared plus 6 x plus 5 EndFraction minus StartFraction x squared minus 4 Over x squared plus 6 x plus 5 EndFraction equals    enter your response here​, no numbers must be excluded.