mckayboyd1 mckayboyd1

29-01-2019
Mathematics

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What is the product (9t-4)(-9-4)

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wegnerkolmp2741o wegnerkolmp2741o

29-01-2019

Answer:

-81t^2 +16

Step-by-step explanation:

(9t-4)(-9t-4)

FOIL

first: -9t*9t = -81t^2

outer : -4*9t = -36t

inner : -4 *-9t = 46t

last = -4*-4 = 16

Add them together

-81t^2 -36t+36t+16

-81t^2 +16

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