Răspuns :
[tex](7 {}^{7} ) {}^{8} \div (7 {}^{9}) {}^{6} = [/tex]
[tex] = 7 {}^{56} \div {7}^{54} [/tex]
[tex] = {7}^{2} [/tex]
[tex] = 49[/tex]
[tex]( {7}^{7} ) {}^{8} \div {( {7}^{9})}^{6} = 7 {}^{7 \times 8} \div 7 {}^{9 \times 6} \\ \\ {7}^{56} \div {7}^{54} = {7}^{56 - 54} = 7 {}^{2} = 49 [/tex]
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