Answer:
[tex] \boxed{ \bold{ \huge{ \boxed{ \sf{4 {x}^{3} + 6 {y}^{2} }}}}}[/tex]
Step-by-step explanation:
[tex] \sf{5 {y }^{2} + 5 - 4 - 4 {y}^{2} + 5 {y}^{2} - 4 {x}^{3} - 1}[/tex]
Collect like terms
⇒[tex]\sf{ 4 {x}^{3} + 5 {y}^{2} - 4 {y}^{2} + 5 {y}^{2} + 5 - 4 - 1}[/tex]
⇒[tex] \sf{4 {x}^{3} + {y}^{2} + 5 {y}^{2} + 5 - 4 - 1}[/tex]
⇒[tex] \sf{4 {x}^{3} + 6 {y}^{2} + 5 - 4 - 1}[/tex]
Calculate
⇒[tex] \sf{4 {x}^{3} + 6 {y}^{2} + 1 - 1}[/tex]
⇒[tex] \sf{4 {x}^{3} + 6 {y}^{2} }[/tex]
Hope I helped!
Best regards! :D
