how to solve

MBA CAT 2023
1
  1. if x^2 + ax + b leaves a remainder 5 when divided by x -1 or x + 1 then the values of a and b are ??? 2) if m and n are roots of the equation a x^2 + bx + c = 0 then the equation whose roots are m + 1/n and n + 1/n are ??
2

1) if x^2 + ax + b leaves a remainder 5 when divided by x -1 or x + 1 then the values of a and b are ???


2) if m and n are roots of the equation a x^2 + bx + c = 0 then the equation whose roots are m + 1/n and n + 1/n are ??