Question

one zero of the quadratic polynomial x^2 + 3x + k is 2, ( here x^2 shows square ofx) then the value of k is (A) 10 (B) –10 (C) 5 ( D) –5

Answer 1

Answer:

0= x² + 3x + k

x = 2

put

0= 4 + 6 + k

k = - 10

( b ) ✓