A binomial squared is written like

So, we have 
So, we want to complete the square 
We can add and subtract 9 to write

Here, Just apply Distributive property which tells, a(b + c) = ab + bc
So, -6(-7 - 3k) = 42 + 18k
In short, Your Answer would be 42 +18k
Hope this helps!
Answer:
Width: 3
Hight:3
explain, I made a block that was 4 blocks long then using the left over material i rearranged the blocks
Step-by-step explanation:
Answer:
1034
Step-by-step explanation:
58.3 I think....hope it helps