What is 2x+y=12 3x-18=y can you write it on paper

Step-by-step explanation:

You have to.move the "2x" so then it'll be "y=12-2x" or "y=-2x+12" For the second one: 3x-18=y You'll move the "-18" so it'll be "3x=y-18 Then you'll move the "y" to where the "3x" is. So it'll be "-y+3x=18" Then move the "3x" "-y=-18-3x". Then you multiply the "-" to the WHOLE equation which will be "-(y=-18-3x) which will give you "y=3x+18". I hope that's what you were asking for.

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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.