Answer:

Step-by-step explanation:
Given

Array:

Required
Complete the blanks
To do this, we simply add up corresponding row and column elements.

So, we have:

Add

So it starts with 12 in the bacterial population. After 1 hour, 6 are added. After another hour passed, 9 are added. 12/1, 18/6, 27/9.
(a ± b)² = a² ± 2ab + b² . . . . . . . (signs match)
The middle term is twice the product of the roots of the other two terms. This tells you the terms of the binomial are the square roots of the end terms.
The sign in the binomial will match the sign of the "2ab" term. The order of terms in the binomial doesn't matter. (a±b)² = (b±a)² when signs match.
Answer:
is 0.75d becase the missing numbers should be the same number
-1 i think that the answer is -1