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.
Answer:
B. 2.6457513110...
and
C. 17.156
Step-by-step explanation:
A rational number is an integer, fraction, terminating decimal, or repeating decimal.
hope this helps!
brainliest appreciated:)
The answer is D from picture you posted .
Step-by-step explanation:
55/12
hope this helps:)
Answer:
7x^2-20
Step-by-step explanation: