Question

If x=3 is one root of quadratic equation 3x² + k=27 find k

Answer 1

Answer:

k = 0

Step-by-step explanation:

x = 3

3 × x² + k = 27

3 × 3² + k = 27

3 × 9 + k = 27

27 + k = 27

k = 27 - 27

k = 0