phamthiai21071999 phamthiai21071999

17-06-2021
Mathematics

contestada

1)Rút gọn:
(√9+4√5)-(√9-4√5)-√5+(√23-8√7)
2)Chứng minh:
x²+x√3+1 luôn luôn dương với mọi x.

Respuesta :

samuel03059 samuel03059

23-06-2021

Answer:

si sumas 9+4×5 te da la respuesta

Answer Link

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