Respuesta :

For the answer to the question above, 
(3•(x2))+2x)+(7•(x3)))+(((2•5x2)+6x)+9)
(3•(x2))+2x)+7x3)+(10x2+6x+9)
((3x2 + 2x) + 7x3) + (10x2 + 6x + 9)
7x3+13x2+8x+9  is not a perfect cube.

split the expression at hand into groups, each group having two terms 

Group 1:  8x+9 
Group 2:  7x3+13x2 

then pull out from each group separately.

Group 1:   (8x+9) • (1)
Group 2:   (7x+13) • (x2)

Find roots (zeroes) of :       F(x) = 7x3+13x2+8x+9
Polynomial Roots Calculator is a set of methods aimed at finding values of x  for which   F(x)=0  

to make this short, 
In this case, the Leading Coefficient is  7  and the Trailing Constant is  9. 



The factors of the Leading Coefficient:  1,7 
the factors of the Trailing Constant:  1,3 ,9 

So the answer is 
7x3 + 13x2 + 8x + 9