Well, honey, it ain't rocket science. To multiply 4n by 2n, you simply multiply the coefficients (4 and 2) to get 8, and then multiply the variables (n and n) to get n^2. Put 'em together and you've got 8n^2. Easy peasy lemon squeezy!
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To multiply 4n and 2n, you multiply the coefficients (4 and 2) to get 8. Then, you multiply the variables (n and n) to get n^2. Therefore, the product of 4n and 2n is 8n^2.
12+4n = 2n12+4n-4n = 2n-4n12 = -2n-1/2(12 = -2n)-6 = n
4n - 2n = 84 2n = 84 n = 42
Move the 2n over the equals sign. Become 4n (as 6n-2n= 4n) and then if 4n=16 then n=4.
3 + 3n = 9 + 2n + 4n n = -2
4n