please explain the steps that are taken to go from the Rewrite/simplify section to the Simplify/rewrite section

The steps of calculation are displayed. Click at any derivative - [. . .] in order to show the rule that was applied. 2x + 8 da 4x + 6 [2x + 8] . (4x + 6) - (2x + 8) . . [4ac + = (42 + 6) 2 (2 . a [x] + [8]) (42 + 6) - (22 + 8) (4 (42 + 6)2 (2.1 + 0) (4x + 6) - (2x + 8) (4.1 + 0) ( 4x + 6)2 2 ( 4x + 6) - 4 (2a + 8) = (4ac + 6) 2 Rewrite/simplify: 2 4 (2x + 8) 4x + 6 (42 + 6) 2 Simplify/rewrite: 5 (2 2 + 3) 2 Simplify Roots/zeros