Evaluate:
5−7÷5−10×5−55^{-7} ÷ 5^{-10} \times 5^{-5}5−7÷5−10×5−5
5 Likes
5−7÷5−10×5−5=5(−7)−(−10)+(−5)=5−7+10−5=53−5=5−2=152=1255^{-7} ÷ 5^{-10} \times 5^{-5}\\[1em] = 5^{(-7) - (-10) + (-5)}\\[1em] = 5^{-7 + 10 - 5}\\[1em] = 5^{3 - 5}\\[1em] = 5^{-2}\\[1em] = \dfrac{1}{5}^2\\[1em] = \dfrac{1}{25}5−7÷5−10×5−5=5(−7)−(−10)+(−5)=5−7+10−5=53−5=5−2=512=251
5−7÷5−10×5−5=1255^{-7} ÷ 5^{-10} \times 5^{-5} = \dfrac{1}{25}5−7÷5−10×5−5=251
Answered By
3 Likes
[{(−15)2}−2]−1\Big[\Big{\Big(-\dfrac{1}{5}\Big)^2\Big}^{-2}\Big]^{-1}[{(−51)2}−2]−1
(7−1−8−1)−(3−1−4−1)−1(7^{-1} - 8^{-1}) - (3^{-1} - 4^{-1})^{-1}(7−1−8−1)−(3−1−4−1)−1
By what number should (−5)−1(-5)^{-1}(−5)−1 be divided to give the quotient (−25)−1(-25)^{-1}(−25)−1.
Find nnn so that 811÷85=8−3×82n−18^{11} ÷ 8^5 = 8^{-3} \times 8^{2n-1}811÷85=8−3×82n−1.
