Question

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

Answer 1

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

$56x^6$

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