Question

100 POINTS PLEAS please help

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

A) 5 u3 - 2 u2 + 5 u + 8
B) -5 u3 - 2 u2 + 5 u + 10
C)5 u3 + 3 u + 8

Answer 1

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

Option A

Answer 2

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

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`