Which is equivalent to the polynomial

The correct solution is "".

Step-by-step explanation:

The given expression is:

=

By opening the brackets, we get

=  

By applying addition and subtraction, we get

=

Or,

The expression isn't a perfect cube.

step-by-step explanation:

the first 5 right here the next 5 i will upload as separate question

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so: