Question

simplify (x+4)(x-4)(x+8)(x-8)​

Answer 1

Answer:

$(x + 4)(x - 4)(x + 8)(x - 8) \\ \\ = ( {x}^{2} - {4}^{2} )( {x }^{2} - {8}^{2} ) \\ = ( {x}^{2} - 16)( {x}^{2} - 64) \\ = {x}^{2} ( {x }^{2} - 64) - 16({x }^{2} - 64) \\ = {x}^{4} - 64 {x}^{2} - 16 {x}^{2} - 1024 \\ = {x}^{4} - 48 {x}^{2} - 1024$

mark me as brainlist and I have derived this formula