Proszę o rozwiązanie i wyjaśnienie poniższych 3 przykładów:
1) 72log7 3+1=
2) 34log3 5-3=
3) 272log3 2-1=
Z góry dziękuję :)
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1) 7^(2log7 3+1)= = 7^(log7 3^2 + log7 7) = 7^(log7 (9 * 7) = 7^(log7 63) = 63
2) 3^(4log3 5-3= 3^(log3 3^4 - log3 3^3) = 3^(log3 (3^4 : 3^3) = 3^(log3 3^(4 - 3) )= 3^(log3 3^1) = 3^( log3 3 )= 3
3) 27^(2log3 2-1)=(3^3)^( log3 2^2 - log3 3) = 3^3 * (log3 (4/3) = 3^(log3 (4/3)^3 = (4/3)^3 = 64/27