What is the amplitude, period, and phase shift of f(x) = −3 cos(4x + π) + 6?

A) Amplitude = 3; period = pi over two; phase shift: x = negative pi over four

step-by-step explanation:

quartic functions has x = –1 and x = –2 as its only two real zeroes:

f(x) = a(x+2)(x+1)   a: real number

hello from mrbilldoesmath!

answer:

x - 3

discussion:

x^2 - 9 = (x-3) (x+3)   so

(x^2-9)/ (x + 3) = x-3

you,

mrb