Các câu hỏi tương tự
14 tháng 10 2023 lúc 12:51
Lập bảng xét dấu:
\(M=\left(2x-1\right)\left(3+x\right)>0\)
\(N=\left(3-x\right)\left(x+4\right)< 0\)
\(P=\left(4-2x\right)\left(x-1\right)>0\)
tìm x,y biết
\(\left|2x-5\right|+\left|3y+1\right|=0\)
\(\left|3x-4\right|+\left|3y-5\right|=0\)
\(|16-|x||+\left|5y-2\right|=0\)
\(\left|2x-5\right|+\left|xy-3y+2\right|=0\)
Tìm x:
\(a,\left(2-x\right)\cdot\left(2x+1\right)>0\)
\(b,\left(2x+3\right)\cdot\left(x+1\right)< 0\)
Tìm x biết1) left(2x+3right)left(x-4right)+left(x-5right)left(x-2right)left(3x-5right)left(x-4right)2)left(8x-3right)left(3x+2right)-left(4x+7right)left(x+4right)left(2x+1right)left(5x+1right)-333)6xleft(3x+5right)-2xleft(9x-2right)+left(17-xright)left(x-1right)+xleft(x-18right)-17x^204)left(x-1right)left(x+2right)-left(x-3right)+5x-70Giúp mình nha. Camon nhiều
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Tìm x biết
1) \(\left(2x+3\right)\left(x-4\right)+\left(x-5\right)\left(x-2\right)=\left(3x-5\right)\left(x-4\right)\)
2)\(\left(8x-3\right)\left(3x+2\right)-\left(4x+7\right)\left(x+4\right)=\left(2x+1\right)\left(5x+1\right)-33\)
3)\(6x\left(3x+5\right)-2x\left(9x-2\right)+\left(17-x\right)\left(x-1\right)+x\left(x-18\right)-17x^2=0\)
4)\(\left(x-1\right)\left(x+2\right)-\left(x-3\right)+5x-7=0\)
Giúp mình nha. Camon nhiều
Tìm x biếtxleft(x+1right)03xleft(2x-1right)0left(x+1right)cdotleft(x-2right)0x^2cdotleft(x+4right)0left(x+1right)^2cdotleft(3x-5right)0x^2+103x^2cdotleft(2x-5right)^201cdot2cdot3cdot.....cdot100x0left(frac{3}{4}right)^x1left(frac{2}{5}right)^{x+1}frac{8}{125}
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Tìm x biết
\(x\left(x+1\right)=0\)
\(3x\left(2x-1\right)=0\)
\(\left(x+1\right)\cdot\left(x-2\right)=0\)
\(x^2\cdot\left(x+4\right)=0\)
\(\left(x+1\right)^2\cdot\left(3x-5\right)=0\)
\(x^2+1=0\)
\(3x^2\cdot\left(2x-5\right)^2=0\)
\(1\cdot2\cdot3\cdot.....\cdot100x=0\)
\(\left(\frac{3}{4}\right)^x=1\)
\(\left(\frac{2}{5}\right)^{x+1}=\frac{8}{125}\)
Tìm x, biết:
a) \(1-3\left|2x-3\right|=-\dfrac{1}{2}\)
b) \(\left(\left|x\right|-0,2\right).\left(x^3-8\right)=0\)
Tìm x ;
\(\left(\frac{1}{2}x^2\left(2x-1\right)^m-\frac{1}{2}x^{m+2}\right):\frac{1}{2}x^2=0\left(m\in N\right)\)
b)\(\left(1,78^{2x-2}-1,78^x\right):1,78^x=0\)
tim x
a)\(2x\left(x-\frac{1}{7}\right)=0\)
b)\(\left(x-9\right).\left(x+\frac{3}{5}\right)=0\)
c)\(\left(\frac{-4}{7}-2x\right)\left(x-\frac{5}{4}\right)=0\)
\(\left(x-1\right)^{2018}+\left(x+3\right)^{2020}+\left|2x-y-z\right|=0\)\(0\)
Tìm x và y biết:d)-1frac{2}{3}-left(left|2xright|+frac{5}{6}right)-2e)left(-frac{1}{2}+frac{1}{3}right):left|1-2xright|-1frac{1}{4}:left(-frac{5}{8}right).left(-frac{1}{2}right)^2frac{1}{3}c)left|2x-1right|+left|2y+1right|+left|2x-yright|0b)left|2x-1right|2x-1a)left|x-3right|x+4
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Tìm x và y biết:
d)\(-1\frac{2}{3}-\left(\left|2x\right|+\frac{5}{6}\right)=\)\(-2\)e)\(\left(-\frac{1}{2}+\frac{1}{3}\right):\left|1-2x\right|-1\frac{1}{4}:\left(-\frac{5}{8}\right).\left(-\frac{1}{2}\right)^2=\frac{1}{3}\)
c)\(\left|2x-1\right|+\left|2y+1\right|+\left|2x-y\right|=0\)b)\(\left|2x-1\right|=2x-1\)
a)\(\left|x-3\right|=x+4\)