Which of these statements is true? A) 4 x 5 – 7 + 9 = 28 B) 4 x 5 – (7 + 9) = 22 C) 4 x 5 – (7 + 9) = 4 D) 4 x 5 – 7 + 9 = 44

(C) is the correct answer!!

Step-by-step explanation:

1.4x5= 20

2. (7+9) = 16

3.20-16= 4

MEANING Your answer is C

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.