Question

( 325 - 317 ) ³  - 2 . ( x -1 ) = 2 ¹⁸ : 8 ²

Answer 1

8^3-2.(x-1)=4096

512.2.(x-1)=4096

       2.(x-1)=4096:512

       2.(x-1)=8

           x-1=8:2

           x-1=4

           x    =4+1

           x     =5

Answer 2

\(\left(325-317\right)^3-2\left(x-1\right)=2^{18}:8^2.\)

\(\left(325-317\right)^3-2\left(x-1\right)=2^{18}:\left(2^3\right)^2\)

\(\left(325-317\right)^3-2\left(x-1\right)=2^{18}:2^6\)

\(\left(325-317\right)^3-2\left(x-1\right)=2^{12}\)

\(8^3-2\left(x-1\right)=2^{12}\)

\(\left(2^3\right)^3-2\left(x-1\right)=2^{12}\)

\(2^9-2\left(x-1\right)=2^{12}\)

\(2\left(x-1\right)=2^9-2^{12}\)

\(2\left(x-1\right)=-3584\)

\(\left(x-1\right)=-2584:2\)

\(x-1=-1792\)

\(x=-1792+1\)

\(x=-1791\)

Answer 3

ket qua ban nào là đúng

Answer 4

\(\left(325-317\right)^3-2\left(x-1\right)=2^{18}:8^2\)

\(\left(325-317\right)^3-2\left(x-1\right)=\frac{2^{18}}{8^2}\)

\(512-2\left(x-1\right)=4906\)

\(512-2\left(x-1\right)-512=4096-512\)

\(-2\left(x-1\right)=3584\)

\(\frac{-2\left(x-1\right)}{-2}=3584\)

\(\frac{-2\left(x-1\right)}{-2}=3584:\left(-2\right)\)

\(x-1=-1792\)

\(x-1+1=\left(-1792\right)+1\)

\(x=-1791\)

\(\Rightarrow x=-1791\)