Answer:
12
Step-by-step explanation:
distribute equation
-2 times k = -2k
-2 times -9 = 18
so -2k+18=-6
solve
subtract 18 from both sides
-2k= -24
divide -2 from both sides
k =12
<h3>
Answer:</h3>

Explanation:
Given expression: (ab)x^2 + (b^2 - ac)x + (-bc) = 0
Here given:
Apply quadratic formula:

Insert values:








Answer:
x=2
y=3
Step-by-step explanation: