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Liono4ka [1.6K]
3 years ago
5

Factor the expression below.

Mathematics
1 answer:
sweet-ann [11.9K]3 years ago
8 0

You must remember that a polynomial is written like so...

ax^2 + bx + c

In this case...

a = 1

b = -18

c = 81

To factor you must find two numbers who both add up to b (-18) AND multiply to c (81)

-9 + -9 = -18

-9 * -9 = 81

so...

D. (x - 9)(x - 9)

Hope this helped!

~Just a girl in love with Shawn Mendes

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