Question

5
If a and B are the roots of x² + 5x - 1 =0
then find a2+ B2​

Answer 1

27

Step-by-step explanation:

a^2+b^2 = (a+b)^2- 2ab

from eqn

a+b = -5 and ab= -1

so ans is (-5)^2-2(-1)

=25 + 2

=27