Please answer quickly include lots of points and I will make Brainlist. Write at least 4 sentences and real answers or will report. Thank you and I appreciate it. Mark is trying to determine which method he should use to solve this system. Using the eyeball test, which method would be the best method to solve this system? Also what is the correct answer?

x-y=10

x+y=12

dd

step-by-step explanation:

dd

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 get you, what you should do is think of the positive things that would come out of it. it will make yours parents proud and raise your grade. you should always try and if you can't focus tell the teacher.