Here, First two number represents Product of first two numbers in L.H.S.
For example, 5 * 3 = 15
Or 9 * 2 = 18
Now, second two numbers represent product of 1st & 3rd number,
For example, 5 * 2 = 10
Or 9 * 4 = 36
Now, Last two numbers represent Sum of 4 digit-number minus middle number.
So, 7 + 2 + 5 = 143547
In short, Your Final Answer would be: 143547
Hope this helps!
Answer: D (-8)(-24) and (-16)(-12)
Step-by-step explanation:
The first expression is equivalent to 192
Therefore, both must be positive which eliminates answer A, B, and C
Therefore the answer must be D
8x24 = 192
16x12=192
I think it is the third and the fourth
f(1) = -8, simply is a way of saying, the 1st value in the arithmetic sequence is -8.
f(n) = f(n-1) - 3, is another way of saying, following values are just, the previous minus -3.
so in short, -3 is the common difference, since that is what we're "adding" to get the new value in the sequence.
![\bf n^{th}\textit{ term of an arithmetic sequence} \\\\ a_n=a_1+(n-1)d\qquad \begin{cases} a_n=n^{th}\ term\\ n=\textit{term position}\\ a_1=\textit{first term}\\ d=\textit{common difference}\\[-0.5em] \hrulefill\\ d = -3\\ a_1 = -8 \end{cases} \\\\\\ a_n=-8+(n-1)(-3)\implies a_n=-8-3n+3\implies \stackrel{f(n)}{a_n}=\stackrel{\stackrel{explicit}{\downarrow }}{-3n-5}](https://tex.z-dn.net/?f=%5Cbf%20n%5E%7Bth%7D%5Ctextit%7B%20term%20of%20an%20arithmetic%20sequence%7D%20%5C%5C%5C%5C%20a_n%3Da_1%2B%28n-1%29d%5Cqquad%20%5Cbegin%7Bcases%7D%20a_n%3Dn%5E%7Bth%7D%5C%20term%5C%5C%20n%3D%5Ctextit%7Bterm%20position%7D%5C%5C%20a_1%3D%5Ctextit%7Bfirst%20term%7D%5C%5C%20d%3D%5Ctextit%7Bcommon%20difference%7D%5C%5C%5B-0.5em%5D%20%5Chrulefill%5C%5C%20d%20%3D%20-3%5C%5C%20a_1%20%3D%20-8%20%5Cend%7Bcases%7D%20%5C%5C%5C%5C%5C%5C%20a_n%3D-8%2B%28n-1%29%28-3%29%5Cimplies%20a_n%3D-8-3n%2B3%5Cimplies%20%5Cstackrel%7Bf%28n%29%7D%7Ba_n%7D%3D%5Cstackrel%7B%5Cstackrel%7Bexplicit%7D%7B%5Cdownarrow%20%7D%7D%7B-3n-5%7D)
