[(27^4:9^5)+(625^3:125^4)]-2^3

=[(531441:59049)+(244140625:244140625)]-8

=[9+1]-8

=10-8

=2

Nếu dk thì cko mik nhoa

Như vậy phải ko bạn?

72 : {[(2³.6 – 2⁵ + 2) + 6] – 5}

kết quả bằng 17

cactoon

(24*5-5^2*2):(5*2)-3

=(120-50)/10-3

=7-3=4

a)\(x^{15}=x\Rightarrow x\in\left\{0;1\right\}\)                                            d)Là ý b

b)\(\left(2x+1\right)^3=125\\ \left(2x+1\right)^3=5^3\Rightarrow2x+1=5\\ 2x=4\\ x=2\)                       e)\(\left(x-3\right)^2=25\\ \Rightarrow\left(x-3\right)^2=5^2\\ \Rightarrow\hept{\begin{cases}x-3=5\Rightarrow x=8\\x-3=-5\Rightarrow x=-2\end{cases}}\)

c)\(\left(x-5\right)^4=\left(x-5\right)^6\\ \Rightarrow x-5\in\left\{0;1\right\}\Rightarrow x\in\left\{5;6\right\}\)

707: [(2^x -5) + 74] = 4² - 3²

(2^x -5) + 74 = 101

2^x - 5 + 74  = 101

2^x + 69 = 101

2^x = 32 = 2⁵

=> x = 5

707: [(2^x -5) + 74] = 4² - 3²

(2^x -5) + 74 = 101

2^x - 5 + 74  = 101

2^x + 69 = 101

2^x = 32 = 2⁵

=> x = 5

707 : [(2^x-5)+74] = 4²-3²

707 : [(2^x-5)+74]= 16 - 9

707 : [(2^x-5)+74]= 7

         (2^x-5)+74 = 707 :7

          (2^x-5)+74= 101

          (2^x-5)      =101-74

          (2^x-5)     = 27

          2^x            = 27+5

         2^x          =32

        2^x             = 2⁵(vì 32=2⁵)

=> x=5

\(36\cdot4-4\cdot\left[82-7\cdot11\right]^2:4-2016^0\)

=9-1-5^2

=8-25=-17