K
kethongtri


de bai :
tinh gia tri cua bieu thuc
((1^4+1/4)(3^4+1/4)(5^4+1/4)........(19^4+1/4)) : ((2^4+1/4)(4^4+1/4)(6^4+1/4)....(20^4+1/4))
tinh gia tri cua bieu thuc
((1^4+1/4)(3^4+1/4)(5^4+1/4)........(19^4+1/4)) : ((2^4+1/4)(4^4+1/4)(6^4+1/4)....(20^4+1/4))