Please explain this on notebook :)
How to do (n-4) and (n-13) came
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3n²-51n+156=0
firstly we want to divide all it with 3 and then do middle term splitting or quadratic formula.
In middle term splitting
firstly we want to divide all it with 3 and then do middle term splitting or quadratic formula.
In middle term splitting
abcdefg12345:
or quadratic formula -bplus or minus root of b square - 4ac divided by 2a
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