Which is a difference of cubes? x6 – 27 x15 – 36 x16 – 64 x5 – 125

Option 1 -

Step-by-step explanation:              

To find : Which is a difference of cubes?

Solution :

Option 1)

We can re-write as in cubic form

It is a difference of cubes.

Option 2)

We cannot re-write 36 as cubic form

So, it is not a difference of cubes.

Option 3)

We cannot re-write  as cubic form

So, it is not a difference of cubes.

Option 4)

We cannot re-write  as cubic form

So, it is not a difference of cubes.

Therefore, Option 1 is a difference of cube.

a) y = -3x +2

b) y = 1/2x -6

these 2 can be combined into one equation.

-3x +2 = .5x -6

8 = 3.5x

x = 8 / 3.5 = 2.2857142857

y = -3 * (8 / 3.5) +2

y = (-24 / 3.5) + 2

y = -4.8571428571

step-by-step explanation:

the answer would be c