1)7¹² * (7⁴)²/(7⁵)⁴=7¹² * 7⁸/7²°=7¹²⁺⁸⁻²°=7°=1
4)(2⁸)³ * 2⁶/2²²=2²⁴ * 2⁶/22²²=2²⁴⁺⁶⁻²²=2⁸=256
2)3⁶ * (3³)²/81²=3⁶ * 3⁶/(3⁴)²=3⁶⁺⁶⁻⁸=3⁴=81
3)5⁵ (5³)⁴/5¹³=5⁵ * 5¹²/5¹³=5⁵⁺¹²⁻¹³=5⁴=625
5)(3⁵)²/3⁶ * 9=3¹⁵/3⁶ * 3²=3¹⁵⁻⁶⁻²=3⁷=6561
6)4⁷ * 64/(4⁴)³=4⁷ * 4³/4¹²=4⁷⁺³⁻¹²=4⁻²=0,04
2t²-53t-27=0;
D=2809+4*2*27=3025=55²;
t₁=(53-55)/4=-0,5; ∅ t>0;
t₂=(53+55)/4=27;
A). x³*(x²)⁵ = x³*x¹⁰ = x¹³
b). (a³)²*a⁵ = a⁶*a⁵ = a¹¹