Question

In each of the following, determine whether the given numbers are roots of the given equations or not:
1. x^2-5x+6=0;2.-3​

Answer 1

Step-by-step explanation:

x²-5x+6=0

put x=2

L.H.S=x²-5x+6

=2²-5×2+6

=4-10+6

= -6+6

=0

R.H.S=0

therefore, it's a root of quadratic equation.

x²-5x+6=0

put x=-3

L.H.S=x²-5x+6

=(-3)²-5×(-3)+6

=9+15+6

= 15+15

=30

R.H.S=0

therefore, it's not a root of quadratic equation.

Answer 2

,...................................................