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)\(\left|x-3\right|=x+4\)

1. Tìm giá tị nhỏ nhất (GTNN) của biểu thức:
a. \(M=|x+\frac{15}{19}|\)
b. \(N=\left|x-\frac{4}{7}\right|-\frac{1}{2}\)
2. Tìm giá trị lớn nhất (GTLN) của biểu thức sau:
a. \(P=-\left|\frac{5}{3}-x\right|\)
b. \(Q=9-\left|x-\frac{1}{10}\right|\)
3. Tìm x, y biết:
a. \(\left|x-y-5\right|+2007\cdot\left(y-3\right)^{2004}=0\)

b. \(\left(x+y\right)^{2016}+2007\cdot\left|y-1\right|=0\)

c. \(\left(x-1\right)^2+\left(y+3\right)^2=0\)
 

Tìm x,y,z biết:

1,\(\left(2x+1-3^{-1}\right)^2=16\)

2, \(\left(3x-2\right)^5=243\)

3. \(\left(x-3\right)^x=\left(x-3\right)^2\)

4. \(\left(\frac{-3}{4}\right)3x-1=\frac{256}{31}\)

5. \(5^{x+2}+5^{x+3}=750\)

6, \(3^{2x+1}\cdot7^y=3\cdot21^x\)

7.\(\frac{3^{2x+1}}{3^{2x+2}}=\frac{7x}{7y}\)

8. \(\frac{3^{3x}}{3^{2x-y}}=3^5;5^{x-6}\)

bài1: tìm x:

a)\(8< 2^x< =2^9.2^5\)

b)\(27< 81^3:3^x< 243\)

c)\(\left(\frac{2}{5}\right)^x\left(\frac{5}{2}\right)^{-3}.\left(\frac{-2}{5}\right)^2\)

d)\(\left(5x+1\right)^2=\frac{36}{49}\)

e)\(\left(x-\frac{2}{9}\right)^3=\left(\frac{2}{3}\right)^6\)                                f)\(\left(8x-1\right)^{2n+1}=5^{2n+1}\)(n thuộc N)

bài 2:tìm x,y biết:

a)\(x^2+\left(y-\frac{1}{10}\right)^4=0\)

b)\(\left(\frac{1}{2}x-5\right)^{20}+\left(y^2-\frac{1}{4}\right)^{10}< =6\)

c)\(\left(x-7\right)^{x+1}-\left(x-y\right)^{x+11}=0\)

bài 3:tìm giá trị nhỏ nhất:

\(A=\left(2x+\frac{1}{3}\right)^2-1\)

tìm Gía trị lớn nhất :\(B=-\left(\frac{4}{9}x-\frac{2}{15}\right)^6+3\)

baif4: tìm x,y:

\(x.\left(x-y\right)=\frac{1}{10}\)                                         \(\)

giúp mình với nhé

Tìm GTNN:

1,\(\left|x-1\right|+9\)

2,\(\frac{3}{2}.x^2+19\)

3,\(5.\left(x-2\right)^2+12\)

4,\(\frac{1}{2}.\left(x-8\right)^2\)

5,\(\left|x-7\right|+\left|y-8\right|+16\)

6,\(\left|x-1\right|+\left|x-3\right|\)

7,\(3.x^2-x+17\)

8,\(\left|x-1\right|+\left|x-3\right|+\left|x-5\right|\)

Giúp mình với ngày mai mình phải nộp rồi !!!

Bài 1: Thu gọn

a) \(\frac{1}{5}x^4y^3-3x^4y^3\)

b) \(5x^2y^5-\frac{1}{4}x^2y^5\)

c) \(\frac{1}{7}x^2y^3.\left(-\frac{14}{3}xy^2\right)-\frac{1}{2}xy.\left(x^2y^{\text{4}}\right)\)

d) \(\left(3xy\right)^2.\left(-\frac{1}{2}x^3y^2\right)\)

e) \(-\frac{1}{4}xy^2+\frac{2}{5}x^2y+\frac{1}{2}xy^2-x^2y\)

f) \(\frac{1}{2}x^4y.\left(-\frac{2}{3}x^3y^2\right)-\frac{1}{3}x^7y^3\)

g) \(\frac{1}{2}x^2y.\left(-10x^3yz^2\right).\frac{1}{4}x^5y^3z\)

h) \(4.\left(-\frac{1}{2}x\right)^2-\frac{3}{2}x.\left(-x\right)+\frac{1}{3}x^2\)

i) \(1\frac{2}{3}x^3y.\left(\frac{-1}{2}xy^2\right)^2-\frac{5}{4}.\frac{8}{15}x^3y.\left(-\frac{1}{2}xy^2\right)^2\)

k) \(-\frac{3}{2}xy^2.\left(\frac{3}{4}x^2y\right)^2-\frac{3}{5}xy.\left(-\frac{1}{3}x^4y^3\right)+\left(-x^2y\right)^2.\left(xy\right)^2\)

n) \(-2\frac{1}{5}xy.\left(-5x\right)^2+\frac{3}{4}y.\frac{2}{3}\left(-x^3\right)-\frac{1}{9}.\left(-x\right)^3.\frac{1}{3}y\)

m) \(\left(-\frac{1}{3}xy^2\right)^2.\left(3x^2y\right)^3.\left(-\frac{5}{2}xy^2z^3\right)^{^2}\)

p) \(-2y.\left|2\right|x^4y^5.\left|-\frac{3}{4}\right|x^3y^2z\)