Question

Simplify and express each expression with no variables in the denominator.

Answer 1

Step-by-step explanation: Here once we have two terms that are common terms (they are common terms because both has the variable "x" in common) we can use the general rule below

`ax^d\cdot bx^e=(a\cdot b)x^(d+e)`

Step 1:Let's substitute our values on the rule above and calculate as follows

`7x^(-3)\cdot8x^9=(7\cdot8)x^(-3+9)=56x^6`

Final answer: So the final answer is

`56x^6`

.