Question

find the sum of the series 1-2+3-4+5-6+.... to n terms
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Answer 1

Step-by-step explanation:

1-2+3-4+5-6+......... n terms

(1+3+5+..... n terms)-(2+4+6+8+....n terms)

(1+3+5+..... n terms)-2(1+2+3+....... n terms)

n²-2(n)(n+1)

2

n²-n(n+1)

n²-n²+n

n

Answer 2

Answer:

your answer is in the attachment

Step-by-step explanation:

hope it's help you XD