Answer :
Answer:
7x (x + 1 ) ( x + 3 )
Step-by-step explanation:
7x³ +28x² +21x
7x ( x² + 4x + 3 )
7x [ x² + 1x + 3x + 3 ]
7x [ x ( x + 1 ) + 3 ( x + 1 ) ]
7x (x + 1 ) ( x + 3 )
The factor of the polynomial 7x³+28x²+21x are 7x, (x + 1), and (x + 3) after factorization.
What is polynomial?
Polynomial is the combination of variables and constants systematically with "n" number of power in ascending or descending order.
[tex]\rm a_1x+a_2x^2+a_3x^3+a_4x^4..........a_nx^n[/tex]
We have a polynomial:
= 7x³+28x²+21x
[tex]\rm =7x\left(x^2+4x+3\right)[/tex]
= 7x(x + 1)(x + 3)
Thus, the factor of the polynomial 7x³+28x²+21x are 7x, (x + 1), and (x + 3) after factorization.
Learn more about Polynomial here:
brainly.com/question/17822016
#SPJ2