Factoring by grouping usually pairs up the first 2 sets of expressions with the second 2 sets. Ours looks like this, then:

. If we factor out the common x-squared in the first set of parenthesis, along with factoring out the common 5 in the second set, we get this:

. Now the common expression that can be factored out is the (x-9). When we do that, here's what it looks like:

. I'm not sure how far you are going with this. You could set each of those equal to 0 and solve for x in each case. The first one is easy. If x - 9 = 0, then x = 9. The second one involves the imaginary i since x^2 = -5. In that case,

. Hopefully, in what I have given you, you can find what you're looking for.
The answer is that it goes 4 units down, i hope this helped :D
A flow proof is the correct answer.
Answer:
D) -1.8, -1 1/2 , 0.3 , 3/4 , 1
Step-by-step explanation:
Change all of the given terms to either fractions or decimals. Generally decimals are easier:
3/4 = 0.75
-1.8 = -1.8
1 = 1.0
-1 1/2 = -1.5
0.3 = 0.3
Order from least to greatest:
-1.8 , -1.5, 0.3 , 0.75 , 1.0
or
-1.8, -1 1/2 , 0.3 , 3/4 , 1
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