Question

for what value of k, -2 is root of 4x^2-12k-9=0​

Answer 1

Answer:

k=7/12

Step-by-step explanation:

Since, -2 is a root of given quadratic equation

so, it will satisfy the equation

4(-2)^2-12k-9=0

4×4-12k-9=0

16-9=12k

7=12k

k=7/12