Question

5y^2+5−4−4y^2+5y^2−4x^3 −1

Answer 1

`\boxed{ \bold{ \huge{ \boxed{ \sf{4 {x}^(3) + 6 {y}^(2) }}}}}`

Explanation:

`\sf{5 {y }^(2) + 5 - 4 - 4 {y}^(2) + 5 {y}^(2) - 4 {x}^(3) - 1}`

Collect like terms

⇒
`\sf{ 4 {x}^(3) + 5 {y}^(2) - 4 {y}^(2) + 5 {y}^(2) + 5 - 4 - 1}`

⇒
`\sf{4 {x}^(3) + {y}^(2) + 5 {y}^(2) + 5 - 4 - 1}`

⇒
`\sf{4 {x}^(3) + 6 {y}^(2) + 5 - 4 - 1}`

Calculate

⇒
`\sf{4 {x}^(3) + 6 {y}^(2) + 1 - 1}`

⇒
`\sf{4 {x}^(3) + 6 {y}^(2) }`

Hope I helped!

Best regards! :D