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poizon [28]
4 years ago
15

Pleaseeee tell me how you got the answer thank you

Mathematics
1 answer:
Sergio [31]4 years ago
4 0
I did this! just think formulas!!!! :)
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Find a • b if a=3i+8j and b=-0.5-4j
Marina CMI [18]

Answer: -8j + 3i

Step-by-step explanation:

3i + 8j · (- 0.5) - 4j

3i-8j · 0.5 - 4j

3i-4j-4j

3i-8j

-8j+3i

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Which polynomial equation is a valid identity?
yulyashka [42]

Answer:

D

Step-by-step explanation:

Expand factors using FOIL

A

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C

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D

(2x + y)(- y - 2x) = - 2xy - 4x² - y² - 2xy = - 4x² - y² - 4xy ← True

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3 years ago
Please help me, ill give you brainliest!!
Stells [14]
TQV is the supplementary angle
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lara31 [8.8K]
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