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loganshockley123
23.04.2021 •
Mathematics
Is 5(x+1) the same as 5x+1? Explain your answer.
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Ответ:
No because 5 times 1 is 5. So it would be 5x + 5
Step-by-step explanation:
Ответ:
5*x= x (correct)
5*1=5 (incorrect)
When I say correct or incorrect it means that it does/doesn’t match 5x+1
Ответ:
Step-by-step explanation:
Given
Solving (a): T7
Substitute 7 for n in![T_n = S_n - S_{n-1}](/tpl/images/1183/4842/f2edf.png)
Calculate S7 and S6
So:
Solving (b): Tn
Where![S_n = n^2 -2n](/tpl/images/1183/4842/5258c.png)
Calculate![S_{n-1}](/tpl/images/1183/4842/a8441.png)
We have:
Open brackets
So:
Collect Like Terms