Question

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

Answer 1

Answer:

Given x2+3x+k

(2)^2+3×2+k

4+6+k

k+10=0

k = -10

Answer 2

Given :-

If one zero of the quadratic polynomial x² + 3x + k is 2,

To Find :-

Value of k

Solution :-

x² + 3x + k = 0

One zero = 2

On putting x = 2

(2)² + 3(2) + k = 0

4 + 6 + k = 0

10 + k = 0

k = 0 - 10

k = -10