Ôn tập toán 6
Các câu hỏi tương tự
Tìm số nguyên x
1/ 17x+3left(-16x-37right)2x+43-4x
2/ -2x-3left(x-17right)34-2left(-x+25right)
3/ left{-3x+2left[45-x-3left(3x+7right)-2xright]+4xright}55-103-57:left[-2left(2x-1right)^2-left(-9right)^0right]-106
4/ -2x+3left{12-2left[3x-left(20+2xright)-4xright]+1right}45
5/ 3x-32-5+1
6/ 15+4x 2x-145
7/ -3left(2x+5right)-16 -4left(3-2xright)
8/ -2x+15 3x-7 19-x
Đọc tiếp
Tìm số nguyên x
1/ \(17x+3\left(-16x-37\right)=2x+43-4x\)
2/ \(-2x-3\left(x-17\right)=34-2\left(-x+25\right)\)
3/ \(\left\{-3x+2\left[45-x-3\left(3x+7\right)-2x\right]+4x\right\}=55-103-57:\left[-2\left(2x-1\right)^2-\left(-9\right)^0\right]=-106\)
4/ \(-2x+3\left\{12-2\left[3x-\left(20+2x\right)-4x\right]+1\right\}=45\)
5/ \(3x-32>-5+1\)
6/ \(15+4x< 2x-145\)
7/ \(-3\left(2x+5\right)-16< -4\left(3-2x\right)\)
8/ \(-2x+15< 3x-7< 19-x\)
Bài 1: Tính:
Aleft(-2right).left(-3right)-5.left|-5right|+125.left(dfrac{-1}{5}right)^2
Bleft(-3right).left|-7right|-left(-4right).left|5right|+dfrac{1}{3}.left|-9right|
Cleft(-2right)^3.left|-3right|-dfrac{1}{5}.left|-25right|-4.left|-7right|+left(-2right)^2
Dleft(-6right).left|-3right|+2.left|-9right|-7left|left(-2right)^3right|+8.left|-7right|
Eleft|-3^2right|.left|4right|-left|7right|.8-left|6right|.left|-8right|-left|12right|.left(dfrac{1}{2}right)^2
Bài 2: Tìm x:
a)12-2left|3x+2rig...
Đọc tiếp
Bài 1: Tính:
A=\(\left(-2\right).\left(-3\right)-5.\left|-5\right|+125.\left(\dfrac{-1}{5}\right)^2\)
B=\(\left(-3\right).\left|-7\right|-\left(-4\right).\left|5\right|+\dfrac{1}{3}.\left|-9\right|\)
C=\(\left(-2\right)^3.\left|-3\right|-\dfrac{1}{5}.\left|-25\right|-4.\left|-7\right|+\left(-2\right)^2\)
D=\(\left(-6\right).\left|-3\right|+2.\left|-9\right|-7\left|\left(-2\right)^3\right|+8.\left|-7\right|\)
E=\(\left|-3^2\right|.\left|4\right|-\left|7\right|.8-\left|6\right|.\left|-8\right|-\left|12\right|.\left(\dfrac{1}{2}\right)^2\)
Bài 2: Tìm x:
a)\(12-2\left|3x+2\right|=10\)
b)\(2.\left|5-4x\right|+17=\left(-2\right)^3.\left(-4\right)\)
c)\(\left|3x-5\right|+\left(-3\right)^2.2=12.\left|3x+5\right|+117\)
d)\(4.\left|3-2x\right|+\left(-5\right).\left|4-3x\right|-5=-6\)
e)\(\left|2x-7\right|-2^3.\left|2x-7\right|+15=-5.\left|2x-7\right|+3\)
f)\(\left|x+2\right|+\left|x^2-4\right|=0\)
g)\(\left|3x-9\right|+\left|x^2-9\right|=0\)
h)\(\left|2x-1\right|+\left|x^2-\dfrac{1}{4}\right|=0\)
Tìm x,y,z
\(\left(x-1\right)^2+\left(3x-y-3\right)^2+\left(y+z\right)^4=0\)
Tìm GTLN hoặc GTNN của :
a) \(A=\left|-x+8\right|-21\)
b) \(B=\left|-x-17\right|+\left|y-36\right|+12\)
c) \(C=-\left|2x-8\right|-35\)
d) \(D=3\left(3x-12\right)^2-37\)
e) \(E=-21-3\left|2x+50\right|\)
g) \(G=\left(x-3\right)^2+\left|x^2-9\right|+25\)
Tìm x.
a, \(\left(3X-2\right)^3=1\)
b,\(\left(X-3\right)^6=\left(X-3\right)^3\)
Tìm GTLN hoặc GTNN của :
a) \(D=3\left(3x-12\right)^2-37\)
b) \(G=\left(x-3\right)^2+\left|x^2-9\right|+25\)
Tìm x;y biết
\(x+\left(-\frac{31}{12}\right)^2\left(\frac{49}{12}\right)^2-x=y\)
Tìm số nguyên x :
\(\left\{-3x+2\left[45-x-3\left(3x+7\right)-2x\right]+4x\right\}=55-103-57:\left[-2\left(2x-1\right)^2-\left(-9\right)^0\right]=-106\)
Tìm Min của: a)B=\(\left|3x-7\right|-\left|3x+2\right|+8\)
b)C=\(\left|X+2\right|+\left|2X+5\right|+\left|X-3\right|\)