Question

simplify
(m⁴+5n²)(m²+4n²)(m+2n)(m-2n)
​

Answer 1

Answer:

${m}^{4} + {3n}^{2}$

Step-by-step explanation:

${m}^{4} - {5n}^{2} - {m}^{2} + {4n}^{2} + ( {m)}^{2} - ({2n) }^{2} \\ {m}^{4} - {5n}^{2} - {m}^{2} + {4n}^{2} + {m}^{2} + {4n}^{2} \\\\ {m}^{4} - {5n}^{2} + {4n}^{2} + {4n}^{2} \\ {m}^{4} + {3n}^{2}$