I don't no, because I haven't learned this lesson yet
so very very sorry
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Chương III : Thống kê
Các câu hỏi tương tự
1) tìm x:
a) 3(x+2)-(x+2)=0
b) (x2+1).(x+2019)=0
c) (x-3)+2x2-6x=0
2) tính :
A=\(\left|x+\frac{3}{2}\right|-\left|x-1\right|+\left|x-\frac{3}{4}\right|\)
tìm x:
(x-3)+2x2-6x=0
tính:
A=\(\left|x+\frac{3}{2}\right|-\left|x-1\right|+\left|x-\frac{3}{4}\right|\)
a, \(\dfrac{\left(-3\right)^x}{81}=-27\)
b, \(2^{x-1}=16\)
c, \(\left(x-1\right)^2=25\)
d, \(0,2-\left|4,2-2x\right|=0\)
e, \(1\dfrac{2}{3}:\dfrac{x}{4}=6:0,3\)
tìm x , biết
a) \(\left|x-2\right|=x\)
b) \(\left|x-3,4\right|+\left|2,6-x\right|=0\)
c) (x+5)3 = -64
d) (2x-3)2 = 9
Tìm x biết:
a) \(\left(-\dfrac{2}{3}\right)^2.x=\left(-\dfrac{2}{3}\right)^5\) ; b) \(\left(-\dfrac{1}{3}\right)^3.x=\dfrac{1}{81}\) ; c) (2x-3)\(^2\) ; d) (3x-2)\(^5\) =-243
bài 1 tìm x thuộc Q biết
a. |x|^1_53 và x0
b.|x|-2,1
c.|x-3,5|5
d. |x+dfrac{3}{4}|-dfrac{1}{2}0
e. |x-dfrac{2}{5}|+dfrac{1}{2}dfrac{3}{4}
f. dfrac{5}{6}-|2-x|dfrac{1}{3}
g. (2x-5)^29
h. sqrt{3-7x}dfrac{1}{4}
i. (dfrac{2}{3})^xdfrac{8}{27}
k. (x+dfrac{1}{2})^2dfrac{1}{9}
l. dfrac{left(-3^xright)}{81}-27
m.left(x-2right)^2x+3(x-2)^2x+1(x thuộc N)
Đọc tiếp
bài 1 tìm x thuộc Q biết
a. |x|=\(^1_53\) và x<0
b.|x|=-2,1
c.|x-3,5|=5
d. |x+\(\dfrac{3}{4}\)|-\(\dfrac{1}{2}\)=0
e. |x-\(\dfrac{2}{5}\)|+\(\dfrac{1}{2}\)=\(\dfrac{3}{4}\)
f. \(\dfrac{5}{6}\)-|2-x|=\(\dfrac{1}{3}\)
g. (2x-5)^2=9
h. \(\sqrt{3-7x}\)=\(\dfrac{1}{4}\)
i. (\(\dfrac{2}{3}\))^x=\(\dfrac{8}{27}\)
k. (x+\(\dfrac{1}{2}\))^2=\(\dfrac{1}{9}\)
l. \(\dfrac{\left(-3^x\right)}{81}\)=-27
m.\(\left(x-2\right)\)^2x+3=(x-2)^2x+1(x thuộc N)
tìm gtln hoặc gtnn: a,p 3.|2x-y|+2sqrt{x-3} b,n-4sqrt{6} -3x-7...
Đọc tiếp
tìm gtln hoặc gtnn: a,p= 3.|2x-y|+2\(\sqrt{x-3}\) b,n=-4\(\sqrt{6}\) -3x-7 c,h=4(x-2y)\(^8\) = 2\(\sqrt{y+2+3}\) d,s= ,\(\dfrac{-7}{3\sqrt{ }x-4+2\left(x-3y^{ }\right)^{ }4+2}+3\)
\(4x^2-1=0\)
\(2x^2_{ }+0.82=1\)
\(\left(3x-\dfrac{1}{4}\right).\left(x+\dfrac{1}{2}\right)=0\)
1)Tìm x, biết :
4.left[3x-1right]+left[xright]-2.left[x-5right]+7.left[x-3right]12
left[2dfrac{1}{5}-xright]+left[x-dfrac{1}{5}right]+8dfrac{1}{5}1,2
3.left[x+4right]-left[2.x+1right]-5.left[x-3right]+left[x-9right]5
2left[x+3dfrac{1}{2}right]+left[xright]-3dfrac{1}{2}left[2dfrac{1}{5}-xright]
Đọc tiếp
1)Tìm x, biết :
\(4.\left[3x-1\right]+\left[x\right]-2.\left[x-5\right]+7.\left[x-3\right]=12\)
\(\left[2\dfrac{1}{5}-x\right]+\left[x-\dfrac{1}{5}\right]+8\dfrac{1}{5}=1,2\)
\(3.\left[x+4\right]-\left[2.x+1\right]-5.\left[x-3\right]+\left[x-9\right]=5\)
\(2\left[x+3\dfrac{1}{2}\right]+\left[x\right]-3\dfrac{1}{2}=\left[2\dfrac{1}{5}-x\right]\)