Simplify :
Stepwise answer!

Step-by-step explanation:

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Use the formula : a² - b² = ( a + b ) ( a - b )

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Distribute 2 through the parentheses

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Multiply the algebraic expressions

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When there is a ( - ) in front of an expression, change the sign of each term in the expression

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Since two opposites add up to zero, it would be better to remove them from the expression

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collect like terms and simplify

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Multiply : ( x² - 4 ) and ( x² - 9 )

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Hope I helped!

Best regards! :D

what are the things "represented below"?

step-by-step explanation:

nobody can if you dont give the choices

an advantage of the standard deviation is that it increases as the dispersion of the data increases. e. the interquartile range is preferred when the data are not skewed or no have outliers. an advantage of the standard deviation is that it uses all the observations in its computation.