Given \tan \theta =-(2)/(7)and (3\pi )/(2)<\theta <2\pi , evaluate cos(2\theta )

Which of the following is the inverse of y = 3∧x y = 1/3∧x y = ㏒3x y = (1/3) ∧x y = ㏒ 1/3∧x

Ireally need subtract and simplify.(-y^2 – 4y - 8) – (-4y^2 – 6y + 3)show your work, ! i will mark you brainliest but you have to show your work.

Write the factored form of this trinomial 9x^2+18x-7