Hitunglah nilai n jika diketahui 2+4+6+...2n=600

diketahui :
a= 2
b = 2

Sn = n/2(2a+(n-1)b)
600 = n/2(4+(n-1)2)
600 = n/2(2+2n)
600 = n+n²
n²+n-600 = 0
(n-24)(n+25) = 0

n= 24

semoga membantu