Question

How do you multiply `7z^ { 4} ( 8z ^ { 2} - 6)`?

Answer 1

You multiply the term outside the parenthesis by each term within the parenthesis. See full information below:

Explanation:

To multiply exponents we use the following rule:

`color(red)(x^a xx x^b = x^(a+b))`

`color(red)(7z^4)(8z^2 - 6) ->`

`(color(red)(7z^4) xx 8z^2) - (color(red)(7z^4) xx 6) ->`

`56z^(4+2) - 42z^4 ->`

`56z^6 - 42z^4`