Question

9.
If p and q are the roots of x2 + 2x + 1 = 0 then the values of p + q becomes
b) -2
d) – 4
a) 2
c) 4​

Answer 1

for eq ax² + bx + c = 0

Sum of roots = -b/a

Multiplication of roots = c/a

x² + 2x + 1 = 0

p & q are roots ,

a = 1 , b = 2, c = 1

=> p + q = -b/a

=> p + q = -2

Hope this helps!