8b + 4 - 4b + 2 =

A) 12b + 6
B) 4b^2 2 + 4 + 2
C) 12bb + 6
D) 4b + 6

What basic trigonometric identity would you use to verify that sin x cos x tan x =1-cos^(2)x?

Hell . what are the solutions to `10x^2 - 38x - 8 = 0`? is this when i find the factors and use the numbers within the factors to determine the zeros? i hope that made sense lol

(c) the diagram shows the first three shapes of a matchsticks arrangement.first shape = 3second shape = 5third shape = 7given m represents the number of matchstick used to arrange the n'th shape.(i) write a formula to represent the relation between m and n. express m as the subjectof the formula.(ii) 19 matchsticks are used to make the p'th shape. find the value of p.