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cestrela7 [59]
3 years ago
14

Really could use the help

Mathematics
1 answer:
SVEN [57.7K]3 years ago
7 0
c squared= a squared+b squared so c squared=25+64 so the answer would be the square root of 89. Hope this helps!!
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Answer:

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Step-by-step explanation:

a) 3(x squared plus 3x cubed - 2)​

x squared = x²

3x cubed = 3x³

3(x squared plus 3x cubed - 2)​

= 3(x² + 3x³ - 2)

= 3x² + 9x³ - 6

Rearrange according to power

= 9x³ + 3x² - 6

When the expression is divided by 3, it is equivalent to

3x³ + x² - 2

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