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zalisa [80]
2 years ago
8

4/3+căn5 - 8/1+căn5 +15/căn5

Mathematics
1 answer:
padilas [110]2 years ago
4 0

Answer:

A= \frac{4}{3 +  \sqrt{5} }  -  \frac{8}{1 +  \sqrt{5} }  +  \frac{15}{ \sqrt{5} }

=  \frac{4(3 -  \sqrt{5)} }{4}  -  \frac{8(1 -  \sqrt{5} }{ - 4}  +  \frac{15 \sqrt{5} }{5}  = 3 -  \sqrt{5 + 2 - 2 \sqrt{5 + 3 \sqrt{5 = 5} } }

Step-by-step explanation:

Cảm \:  ơn!!!!

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