Also, check out other source sheets in this series by looking for Melachim-related topics with the author named Ephraim Helfgot.
(ה) וּמִכָּל בָּנַי כִּי רַבִּים בָּנִים נָתַן לִי יְהוָה וַיִּבְחַר בִּשְׁלֹמֹה בְנִי לָשֶׁבֶת עַל כִּסֵּא מַלְכוּת יְהוָה עַל יִשְׂרָאֵל.
(26) Now David the son of Jesse reigned over all Israel. (27) And the time that he reigned over Israel was forty years: seven years reigned he in Hebron, and thirty and three years reigned he in Jerusalem. (28) And he died in a good old age, full of days, riches, and honour; and Solomon his son reigned in his stead. (29) Now the acts of David the king, first and last, behold, they are written in the words of Samuel the seer, and in the words of Nathan the prophet, and in the words of Gad the seer; (30) with all his reign and his might, and the times that went over him, and over Israel, and over all the kingdoms of the countries.
Answer 1: Melachim was written against the backdrop of Hurban Habayit. It discusses mainly the sins of Bnai Yisrael. Divrei Hayamim, in contrast, was written right after Shivat Tzion. It portrays a bright, cheery history full of national pride. As such, we can expect Divrei Hayamim to smooth out the rough edges, while Melachim will magnify the low points.
Answer 2: Let's look at a verse from the Divrei Hayamim story: