Find n from 1026=(111-3n)*n
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Step-by-step explanation:
1026=(111-3n)n
1026=111n-3n²
3n²-111n+1026=0
3n²-54n-57n+1026=0
3n(n-18)-57(n-18)=0
(3n-57)(n-18)=0
3n-57=0. ; n-18=0
3n=57. ;. n=18
n=19
therefore,n=19 or 18
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