Answer & Step-by-step explanation:
3x²
This term represents a monomial expression. Mono- means one. This term is by itself. It has no other term added or subtracted to it.
The coefficient of this term is 3 because it is the number that the variable is connected to.
There are no constants because this is a monomial expression.
X^2 + 10X + 21
(X + 3)(X + 7)
It's scientific notation, so 1.4x10^7 would be 14000000 <span />
