To multiply binomials, use the FOIL method. You start by multiplying the first terms in each binomial, 3n * n. The F stands for first.
Then you multiply the outside terms, 3n * 3. The O stands for outsides.
Then you multiply the inside terms, 2 * n. The I stands for insides
Then you multiply the last terms, 2 * 3. The L stands for last
Now solve for each, place them in the same equation, and combine like terms.
3n * n = 3n²
3n * 3 = 9n
2 * n = 2n
2 * 3 = 6
Your equation becomes 3n² + 9n + 2n + 6.
The 9n and 2n can combine together because they are like terms. Your answer becomes:
3n² + 11n + 6
I don’t know what’s the answer
Answer:
D 46x²+ 67x -16
Step-by-step explanation:
adding like terms
R1(x) + R2(x) = 16x²+52x-27 + 30x² + 15x + 11
total = 46x²+ 67x -16
<u></u>There are two way sof doing this question:
<em><u>1st solution is : </u></em>
<em> </em><u><em>6/15 = 2/</em></u><u /><em><u>5</u>
</em>because 6/15 is divisible by 3 and it is done by this form :
3 X 2 = 6
and
3 X 5 = 15
<em><u>2nd solution is:
</u></em><u></u>6/15 = 2/?
here we suppose that the missing value is <em>x:
</em> 6/15 = 2/x
you shift the denominators and then multiply them by the their numerators:
6 * x = 15 * 2
6x = 30
now you divide 6 on both sides:
<em> </em>6x/6 = 30/6
<em><u>x = 5</u></em><em>
</em>
The number of rows in the arena is 26
<h3>How to determine the number of rows?</h3>
The hockey arena illustrates an arithmetic sequence, and it has the following parameters:
- First term, a = 220
- Sum of terms, Sn = 10920
- Common difference, d = 16
The number of rows (i.e. the number of terms) is calculated using:
So,we have:
Evaluate the terms and factors
Evaluate the like terms
21840 = n(424+ 16n)
Expand
21840 = 424n + 16n^2
Rewrite as:
16n^2 + 424n - 21840 = 0
Using a graphical tool, we have:
n = 26
Hence, the number of rows in the arena is 26
Read more about arithmetic sequence at:
brainly.com/question/6561461
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