Matematika SMA hampir 4 tahun yang lalu help me please ππ a. 2 +4 +6+ ..+ 2n = n(n + 1) b. 1+4 +7+ ..+ (3n β 2) = n(3n-1) c. (1.1!) + (2.2!) + (3.3!) + d. 1.2+2.3+3.4+ +n(n + 1) = e. 2(1 + 3+32 + 33 + ...+ 3"-1) = 3" β 1 2 + (n. n!) = (n + 1)! β 1 n(n+1)(n+2) ... ... %3D %3D Menunggu Jawaban Answers: 0
