What is the standard form of y=(3x1)(7x2)(x+1)?

1 Answer

21x3+20x2+x+2

Explanation:

Given: y=(3x1)(7x2)(x+1)
First, solve (3x1) and (7x1) by expanding them.
(3x1)(7x2)
=21x26x7x+2
=21x2x+2
Now,solve (21x2x+2) and (x+1) by expanding them.
(21x2x+2)(x+1)
=21x3+21x2x2x+2x+2
=21x3+20x2+x+2