Which systems of equations have no solutions? (Check all that apply.) A. x – y = 1, –3x + 3y = 3
B. 2y = 3 – 4x, x + y = 0
C. 12x + 2 = 4y – 10, 2x + y = –11
D. –3x – y = 5, 15x = 10 – 5y
E. x + y = 1, –4x + 2y = 7

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.

x = -5

step-by-step explanation: