If each square is 2cm long then the perimeter is

primeter=8

Step-by-step explanation:

primeter=4L

=4*2

=8

for each square the perimeter would be length times width. so 2x2 =4

Now if there are multiple squares then the answer would be different. but 4 is the answer for the individual square.

a

b

d

step-by-step explanation:

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.