Mathematics: Jen factored x² - 4x - 21 as (x - 3)(x + 7) What did she do wrong?

Jen factored x² - 4x - 21 as (x - 3)(x + 7) What

Ответ:

Joshyy23

16.07.2021

Mathematics

She didn't put the sign's in the proper place, it should be ( x + 3 ) ( x - 7 )

Step-by-step explanation:

( x - 3 ) ( x + 7 ) = x² + 7x - 3x - 21 = x² + 4x - 21

( x + 3 ) ( x - 7 ) = x² - 7x + 3x - 21 = x² - 4x - 21

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Ответ:

Jana1517

16.07.2021

Mathematics

Jen should have done (x+3)(x-7) bc the middle value of the original equation needs to be equal to the two numerical values added together from the factored equation

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Ответ:

ashley352

20.09.2021

Mathematics

I a function is even the leading term will have an even exponent. If a function is odd than the leading terms exponent is odd.

an even function has a parabola looking graph, while an odd function has min and max graph

What is meant mathematically when we say we have an even or odd function?

What is meant mathematically when we say we have an even or odd function?

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Jen factored x² - 4x - 21 as (x - 3)(x + 7) What did she do wrong?

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