Question

If one zero of quadratic polynomial kx square + 3 X + k is 2 find k

Answer 1

Step-by-step explanation:

p(x)=kx sq +3x+k=0

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

=4k+6+k=0

=5k+6=0

=5k=0-6

=k=-6/5

Answer 2

Step-by-step explanation:

GIVEN:-)

→ One zeros of quadratic polynomial = -3.

→ Quadratic polynomial = ( k - 1 )x² + kx + 1.

Solution:-

→ P(x) = ( k -1 )x² + kx + 1 = 0.

→ p(-3) = ( k - 1 )(-3)² + k(-3) + 1 = 0.

=> ( k - 1 ) × 9 -3k + 1 = 0.

=> 9k - 9 -3k + 1 = 0.

=> 6k - 8 = 0.

=> 6k = 8. .......

$\large \boxed{=> k = \frac{8}{6} = \frac{4}{3} }$

Hence, the value of ‘k’ is founded .