Fill in the blanks.
If we want to cancel an expression from a fraction, we must be able to
?
exponentiate
factor
invalidate
subtract
it from numerator and denominator.
When we factor an expression, we write it as a
?
difference
product
quotient
sum
.
If a factor appears in both numerator and denominator, it is called a
?
common
fallacious
missing
zero
factor.
If all the factors in the numerator or denominator cancel out, we replace it by
.