Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
\(\left(X^2-\left(6^2-\left(8^2-9.7\right)-7.5\right)5^3\right)\)\(=1\)
\(\left(X^2-\left(36-\left(64-63\right)^3-35\right)^3-15\right)^3\)\(=1\)
\(\left(X^2-\left(36-1^3-35\right)^3-15\right)^3\)\(=1\)
\(\left(X^2-\left(36-1-35\right)^3-15\right)^3\)\(=1\)
\(\left(X^2-\left(35-35\right)^3-15\right)^3\)\(=1\)
\(\left(X^2-0^3-15\right)^3\)\(=1^3\)
\(\Rightarrow X^2-0-15\)\(=1\)
\(X^2-15\)\(=1\)
\(X^2=15+1\)
\(X^2=16\)
Mà: \(X^2=4^2\)
\(\Rightarrow X=4\)
4 x ( 2017 - 16x ) = 68
2017 - 16x = 68 : 4 = 17
16x = 2017 - 17 = 2000
x = 2000 : 16 = 125
a) \(2x-138=2^3.3^2\)
\(\Rightarrow2x-138=72\)
\(\Rightarrow2x=210\)
\(\Rightarrow x=105\)
b) \(231-\left(x-6\right)=1339:13\)
\(\Rightarrow231-\left(x-6\right)=103\)
\(\Rightarrow x-6=110\)
\(\Rightarrow x=116\)
a) \(2.x-138=2^3.3^2\)
\(2.x-138=8.9\)
\(2.x-138=72\)
\(2x=72+138\)
\(2x=210\)
\(x=210:2\)
\(x=105\)
\(231-\left(x-6\right)=1339:13\)
\(231-\left(x-6\right)=103\)
\(x-6=231-103\)
\(x-6=128\)
\(x=128+6\)
\(x=134\)
5.(7+48:x)=45
(7+48:x)=45:5
(7+48:x)=9
48:x=9-7
48:x=2
x=48:2
x=24
3.5x=60.58+15.254
=>3.5x=12.5.58+3.5.(52)4
=>3.5x=12.59+3.59
=>3.5x=(12+3).519
=>3.5 x=15.59=3.5.59
=>3.5x=3.510
=> x=10
Tk mk
3.5x=60.58+15.254
=> 3.5x=60.58+15.(52)4
=>3.5x=60.58+15.58
=>3.5x=58.(60+15)
=>3.5x=58.75
=>3.5x=58 . 25.3(75=25..3)
=>3.5x=58.52.3
=>3.5x=510.3
=> x=10
Chúc bạn học tốt!
a) \(2x-13=2^3.3^2\)
=> \(2x-13=8.9=27\)
=> \(2x=27-13=14\)
=> \(x=7\)
b) \(231-\left(x-6\right)=1339:13=103\)
=> \(x-6=231-103=128\)
=> \(x=6+218=224\)
mik nham cho 3^x -10=0 nhe!