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frac45 √75 + 0,5√27 - 8√147 = frac45 * √25*3 + 0,5 * √9*3 - 8 * √49*3 = frac45 * 5 * √3 + 0,5 * 3 * √3 - 8 * 7 * √3 = 4√3 + 1,5√3 - 56√3 = -50,5√3
2.
a) 5⁻⁶ ÷ 5⁴ = 5 ⁻⁶⁻⁴ = 5 ^{-10}
b) (3⁴)³ × 3² = 3 ^{12} × 3² = 3 ^{12+2} = 3 ^{14}
3.
frac127 = 3⁻³
93 = (3 ^{2})³ = 3 ^{6}
( frac19 )⁻³ = 3 ^{6}
4.
a)√864 => √144*6 = 12√6
b) √75 + √48 => √25*3 +√16*3 = 5√3 + 4√3 = 9√3
c) 0,3√32 - 0,1 √27 = 0,3 * √16*2 - 0,1 * √3*9 = 1,2√2 - 0,3√3