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2 years ago

12

100 POINTS PLEAS please help

2 answers:

mel-nik [20]2 years ago

7 0

(-2u³+5u-1)+(7u³-2u²+9)
-2u³+5u-1+7u³-2u²+9
5u³-2u²+5u-1+9
5u³-2u²+5u+8

Option A

Kamila [148]2 years ago

6 0

Answer:

$\textsf{A)} \quad 5u^3-2u^2+5u+8$

Step-by-step explanation:

Given expression:

$(-2u^3+5u-1)+(7u^3-2u^2+9)$

Remove parentheses:

$\implies -2u^3+5u-1+7u^3-2u^2+9$

Collect like terms:

$\implies -2u^3+7u^3-2u^2+5u-1+9$

Combine like terms:

$\implies 5u^3-2u^2+5u+8$

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3 years ago

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Answer:

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Step-by-step explanation:

Given

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Required

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