Question

If one of the zero of quadratic polynomial x2+3x+k is 2 then what is the value of k

Answer 1

Answer:

one zero=2

p(x)=x^2+3x+k,k=?

this implies,p(2)=0

p(2)=(2)^2+3(2)+k=0

4+6+k=0

=10+k=0

this implies,k=-10.