Choose all expressions equivalent to 4 (4c + 2d) - d A. 160
B. 16c +d
C. 16c + 7d
D. 8(2c + d)-d
E. (4-d) + (4c + 2d)

`1234567890-=/*-qwertyuiop[]asdfghjkl; '\\zxcvbnm,./+ /

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

i think the answer is b