Question

-25=n/2[2×-6+(n-1)1/2] please solve urgent​

Answer 1

Step-by-step explanation:

-25 = n/2 [2×(-6)+(n-1)1/2]

-25 = n/2 [(-12)+(1/2)n- 1/2]

-25 = n/2 [(-11×1/2) + (1/2)n]

-25 = n/4 [n-11]

-25×4 = n^2-n11

-100 = n^2 - n11

0 = n^2 - n11+100

The factors of 100 are 2×2×5×5

The answer will not come because we can't devide n^100 to get(-11n)