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weeeeeb [17]
3 years ago
6

4+8+12+... + 4n=2n(n+1)

Mathematics
1 answer:
Blababa [14]3 years ago
4 0
4 + 8 + 12 + 4n = 2n(n + 1)
            24 + 4n = 2n(n) + 2n(1)
            24 + 4n = 2n² + 2n
           <u>        -2n            -2n</u>
                    24 = 2n²
                    <u>24</u> = <u>2n²
</u>       <u />              2      2
                    12 = n²
                  √12 = n
              √4 × 3 = n
               √4 √3 = n
                 2 √3 = n
<u />
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