Answer:
6a+12b+18c
Step-by-step explanation:
0.555555556 so that's it hope this helped
y axis is vertical x is horizontal
The square of a binomial expands as follows:

Expanding all the binomials, we have

Sum like terms:

Simplify terms appearing on both sides:

Move all terms involving k to the left and all numbers to the right:

Divide both sides by -20:
