tolong jawabb7,8,9,10 pleasseee bsk dikumpulll tolong dibantu......

7. x² + 5x - 6 /x+ 6 = (x + 6)(x -1)/x+6 = x-1 /1
8. 25x² -y² = (5x)² - (y)²=
(5x +y)(5x -y)
9. i. dan iii
10. domain = 1, 2, 3, 4
kodomain = a , b, ,c ,d
range = a, b, c