How do you multiply #(3x ^ { - 9} y ^ { 4} ) ( - 2x ^ { 2} y ^ { 7} )#?
1 Answer
Jun 11, 2017
Explanation:
When expanding terms like this, multiply the like terms together ie. multiply constants together, multiply unknown terms together.
When multiplying like terms with exponents, you add the exponents together.
End result: