Question

Simplify this expression and write the result using positive exponents only​

Answer 1

`\displaystyle 5b^(-4)`

Explanation:

`\displaystyle 5b^(-4) = (-5a^4b^(-7))(-a^(-4)b^3) \\ \\ (5)/(b^4) = 5b^(-4)`

According to the Negative Exponential Rule [part II], you bring the denominator to the numerator WHILE ALTERING THE INTEGER SYMBOL FROM POSITIVE TO NEGATIVE:

`\displaystyle b^(-n) = (1)/(b^n)`

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