Question

Simplify and give answer as positive exponentkoa) x4. x-7xb)k4

Answer 1

To simplify the expression, we need to use an exponent propertie

`a^n\cdot a^m=a^(n+m)`

Then, we can see that in this case a = x, n = 4 and m = -7

So now we must replace the values

`x^4\cdot x^(-7)=x^(4-7)=x^(-3)`