Question

find the values of p and q for which x=1 and x=-1 are the roots of the equation px^2 + qx + 7=0.

Answer 1

if they are roots so
p² -q²+7=0
and
-p²+q²+7=0
adding these eqñ we get
p²-q²+7=0
-p²+q²+7=0
+ +. +
_________
0+0+7=0
7=0
and
this is not possible so this question in incorrect

Answer 2

find the values of p and q for which x=1 and x=-1 are the roots of the equation px^2 + qx + 7=0.