Question

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

ANS:- fast​

Answer 1

Answer:

${x}^{2 } + 3x + k \\ \\ according \: to \: question \\ \\ x = 2 \: \: \: is \: given \: so \: thats \: why \\ \\ {2}^{2} + 3 \times 2 + k = 0 \\ 10 + k = 0 \\ k = - 10$