Question

Rewrite the expression in the form y^n

y^-4 * y^3

Answer 1

Since the base is the same and they are multiplying, write one base and add the exponents.


${y}^{ - 4} \times {y}^{3} = {y}^{ - 4 + 3}$
$= {y}^{ - 1}$

Answer 2

When you multiply and the bases are the same you add the exponents together.
-4+3=-1

So the answer is y^-1