a4-b4=?pleaseplease telle the amswer
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a4 - b4
(a2)2 - (b2)
(a2 + b2 ) ( a2 - b2)
(a2 + b2) (a)2 -(b)2
(a2 + b2) ( a+b) ( a-b)
(a2)2 - (b2)
(a2 + b2 ) ( a2 - b2)
(a2 + b2) (a)2 -(b)2
(a2 + b2) ( a+b) ( a-b)
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