41 - \(2^x\)= 9
X x 9 - X x 2 = 41 + 22
\(Xx\left(9-2\right)=63\)
\(Xx7=63\)
\(X=63:7=9\)
Tìm x:
X + 6 = 33
9 + x = 22
X − 41 = 41
X + 6 = 33
X = 33 − 6
X = 27
9 + x = 22
X = 22 − 9
X = 13
X − 41 = 41
X = 41 + 41
X = 82
giúp em với
X x 9 - X x 2 = 41 + 22
X x 9 - X x 2 = 41 + 22
X x 9 - X x 2 = 63
X x ( 9 - 2 ) = 63
X x 7 = 63
X = 63 : 7
X = 9
Vậy : X = 9
thực hiện phép tính :
a, -1/2 + 19/23+ -9/2+ 4/23 +3 /-6
b. 5/13+ -5/7 +-20/41 + 8/13 +-21/41
c.-5/7 x 19/41 + 5/7 x -21/41 + 5/7
d. 7/3 +1/2 - -3/70
Đây là phân số
\(41-2^x=9\)
41-2\(^x\)=9
2\(^x\)=41 - 9 =32
=>2\(^x\)=32
=> x=5
k mik nha.100% là đúng đó
41-2^x+1=9
2^x+1-2x=32
help me
1) 41 - 2x + 1 = 9
-2x + 1 = 9 - 41
-2x + 1 = -32
2x + 1 = 32
2x + 1 = 25
x + 1 = 5
x = 5 - 1
x = 4
\(41-2^x+1=9\)
\(41-2^x=9-1=8\)
\(2^x=41-8=33\)
\(x=\sqrt{33}\)
(x+3/5)2+41/25=9% : 4,5%
(\(x\) + \(\dfrac{3}{5}\))2 + \(\dfrac{41}{25}\) = 9%: 4,5%
(\(x\) + \(\dfrac{3}{5}\))2 + \(\dfrac{41}{25}\) = 2
(\(x\) + \(\dfrac{3}{5}\))2 = 2 - \(\dfrac{41}{25}\)
(\(x\) + \(\dfrac{3}{5}\))2 = \(\dfrac{9}{25}\)
\(\left[{}\begin{matrix}x+\dfrac{3}{5}=\dfrac{3}{5}\\x+\dfrac{3}{5}=-\dfrac{3}{5}\end{matrix}\right.\)
\(\left[{}\begin{matrix}x=\dfrac{3}{5}-\dfrac{3}{5}\\x=-\dfrac{3}{5}-\dfrac{3}{5}\end{matrix}\right.\)
\(\left[{}\begin{matrix}x=0\\x=-\dfrac{6}{5}\end{matrix}\right.\)
Vậy \(x\in\) {-1; \(\dfrac{1}{5}\)}
a) 2 x + 1- 2 x =32
b) 41 - 2 x - 1 = 9
c) (2 x + 1) mũ 2 = 49
a) 2 x + 1 - 2 x =32
b) 41 - 2 x - 1 = 9
c) (2 x + 1)mũ 2 =49
Tính giá trị của biểu thức
2/5 + 2/3 x 3/4
1/2 x 1/3 - 1/8
(1/2 + 1/3) : 3/9
\(\dfrac{9}{10}\)
\(\dfrac{1}{24}\)
\(\dfrac{5}{2}\)