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Simplifica fractiile si scrie rez. in fractie ireductibila
a) [tex] \frac{a87+a78}{36} [/tex]
b) [tex] \frac{16 ^{10} }{4 ^{18} } [/tex]
Dau coroana


Răspuns :

[tex] \frac{ 16^{10} }{ 4^{18} } }= \frac{( 2^{4}) ^{10} }{( 2^{2}) ^{18} } = \frac{ 2^{40} }{ 2^{36} }= 2^{4} =16 [/tex]