Question

If x minus 1 is equal to a prove that 2 cube a cube + 8 is equal to 8 x cube minus 16 x square + 16 x minus 8 x

Answer 1

Answer:

Step-by-step explanation:  

If x2 = a, then x =  or .

 

The property above says that you can take the square root of both sides of an equation, but you have to think about two cases: the positive square root of a and the negative square root of a.