Question

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Answer 1

Answer:

pic is not clear re clock the photo and ask again

Answer 2

IF U KNOW THE ARTHEMATIC PROGREESION IT WILL COME EASIER.....

Step-by-step explanation:

Sn=437

a=-4

and d=-1-(-4)=3 BECAZ D=2ND TERM MINUS FIRST TERM

Sn=n/2(2a+(n-1)d) ITS FORMULA

437=n/2(2(-4)+(n-1)3

437=n/2(-8+3n-3)

437=n/2(-11+3n)

874=n(-11+3n)

874=-11n+3n^2

3n^2-11n-874=0

THERE FORE N= -B±√B^2-4AC/2A

IF WE DO THIS N WILL COME THE N IS YOU'RE ANSWER

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