Answer:
1. [tex] \boxed{ \bold{ \sf{ - 3x + 5}}}[/tex]
2. [tex] \boxed{ \bold{ \sf{ {x}^{4} + 3 {x}^{3} + 2x}}}[/tex]
Step-by-step explanation:
1. [tex] \sf{(2x + 2) + (3 - 5x)}[/tex]
When there is a ( + ) in front of expression in parentheses , the expression remains the same.
⇒[tex] \sf{2x + 2 + 3 - 5x}[/tex]
Collect like terms
⇒[tex] \sf{ - 3x + 2 + 3}[/tex]
Add the numbers
⇒[tex] \sf{ - 3x + 5}[/tex]
2. [tex] \sf{( {3x}^{3} - 4 {x}^{4} ) + (2x + 5 {x}^{4}) }[/tex]
When there is a ( + ) in front of expression in parantheses , the expression remains the same
⇒[tex] \sf{3 {x}^{3} - 4 {x}^{4} + 2x + {5x}^{4} }[/tex]
Collect like terms
⇒[tex] \sf{ {x}^{4} + 3 {x}^{3} + 2x}[/tex]
Hope I helped!
Best regards!!