Question

please answeerrtrrr

Answer 1

a=-4
d=3
Sn=437
Sn=n/2 [2a+(n-1)d]
Sn=n/2[2×(-4)+(n-1)×3]
Sn=n/2 [(-8)+3n-3]
Sn=n/2[(-11)+3n]
Sn=-11n/2+3n^2/2
Sn=437 (given)
437=-11n/2+3n^2/2
437×2=-11n+3n^2
874=-11n+3n^2

3n^2-11n-874

factorise it .......

Answer 2

hope this helps...
best of luck....