Plese me i really need with my hw

Simplify 5 square root of 7 end root plus 12 square root of 6 end root minus 10 square root of 7 end root minus 5 square root of 6 . (1 point) 5 square root of 14 end root minus 7 square root of 12 5 square root of 7 end root minus 7 square root of 6 7 square root of 12 end root minus 5 square root of 14 7 square root of 6 end root minus 5 square root of 7

If c(x) = 4x – 2 and d(x) = x2 + 5x, what is (cxd)(x)

Which of the following points is collinear with (-2,1) and (0,3)