Answer:
The answer is 10m² - 1
Step-by-step explanation:
1) Remove parentheses.
[tex] {4m}^{2} - {5m}^{4} - 5 + {5m}^{4} + {6m}^{2} + 4[/tex]
2) Collect like terms.
[tex]( {4m}^{2} + {6m}^{2} ) + ( - {5m}^{4} + {5m}^{4} ) + ( - 5 + 4)[/tex]
3) Simplify.
[tex] {10m}^{2} - 1[/tex]
Therefor, the answer is 10m² - 1.
