multiplying rational expressions means multiplying two alg. rxpressions that look like fractions, Just like normal, multiply numerators and multiply denominators then reduce.
Division, just like regular fractions means to invert the divisor and the multiply (as above)
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To divide by a fraction, you simply multiply by the reciprocal. For example, dividing by 3/5 is the same as multiplying by 5/3.
Simplify, possibly!
Dividing by a rational number (other than zero) is simply multiplication by its reciprocal.
It is the same as dividing by the original expression.
a rational function.