Question

sove equation -4+(-1)+2+.........+x=437

Answer 1

common difference=3; first term=-4
so sum = (n/2){2a+(n-1)d}
=(n/2)(-8+3n-3)= (n/2)(3n-11)=437
3n^2- 11n -874=0
solve it for n then find Nth term

Answer 2

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This is the best possible answer

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