giải pt sau
a)\(\left(x-2\right)\left(x-3\right)+2x=\left(x-2\right)^2-2\)
b) \(\left(x-1\right)^2+3x\left(x-1\right)+7=\left(2x-1\right)^2+5\left(x-3\right)\)
c)\(5\left(x^1-2x-1\right)+2\left(3x-2\right)=5\left(x+1\right)^2\)
d)\(\left(x-1\right)\left(x^2+x+1\right)-2x=x\left(x-1\right)\left(x+1\right)\)
Giải các phương tình sau:
a) \(\left(12x+7\right)^2\left(3x+2\right)\left(2x+1\right)=3\)
b)\(8\left(x+\dfrac{1}{x}\right)^2+4\left(x^2+\dfrac{1}{x^2}\right)^2-4\left(x^2+\dfrac{1}{x^2}\right)\left(x+\dfrac{1}{x}\right)^2=\left(x+4\right)^2\)
c)\(2x\left(8x-1\right)^2\left(4x-1\right)=0\)
d)\(x^2-y^2+2x-4y-10=0\) ( x,y là các số nguyên dương )
Chứng minh biểu thức sau không phụ thuộc vào giá trị của biến :
\(A=x.\left(5x-3\right)-x^2.\left(x-1\right)+x.\left(x^2-6x\right)-10+3x+x.\left(x^2+x+1\right)-x^2.\left(x+1\right)-x+5\)
\(B=3.\left(2x-1\right)-5.\left(x-3\right)+6.\left(3x-4\right)-19x+x.\left(3x+12\right)-\left(7x-20\right)+x^2.\left(2x-3\right)-x.\left(2x^2+5\right)\)
Giải các phương trình sau :
a,\(\left(4x-3\right)\left(2x-1\right)=\left(x-3\right)\left(4x-3\right)\)
b,\(25x^2-9=\left(5x+3\right)\left(2x+1\right)\)
c,\(\left(3x-4\right)^2-4\left(x+1\right)^2=0\)
Giải phương trình:
\(a,\left|-5x\right|=3x-16\)
\(b,\left|2x+1\right|=\left|x-1\right|\)
\(c,\left|2x+1\right|-\left|5x-2\right|=3\)
Giải pt sau
\(\left(\dfrac{x-1}{x+2}\right)^2-\left(\dfrac{2x+4}{x-3}\right)^2+3\left(\dfrac{x-1}{x-3}\right)=0\)
Giải các phương trình sau
e) \(\frac{1}{2}\left(x+1\right)+\frac{1}{4}\left(x+3\right)=3-\frac{1}{3}\left(x+2\right)\)
f)(4-3x)(10x-5)=0
g) (x-3)(2x-1)=(2x-1)(2x+3)
h) 9 - x^2 = 0
Giải phương trình
\(\left(x^2+x+1\right)^2=3\left(x^4+x^2+1\right)\)
\(x\left(x+1\right)\left(x-1\right)\left(x+2\right)=24\)
\(2x\left(8x-1\right)^2\left(4x-1\right)=9\)
\(\left(12x+7\right)^2\left(3x+2\right)\left(2x+1\right)=3\)
Giải các phương trình sau:
a) \(x^2+\dfrac{2x}{x-1}=8\)
b) \(\dfrac{x^2+2x+1}{x^2+2x+2}+\dfrac{x^2+2x+2}{x^2+2x+3}=\dfrac{7}{6}\)
c) \(\dfrac{x+4}{x-1}+\dfrac{x-4}{x+1}=\dfrac{x+8}{x-2}+\dfrac{x-8}{x+2}+6\)
d) \(\left(x^2+6x+8\right)\left(x^2+8x+15\right)=24\)
e) \(\left(x^2+x-2\right)\left(x^2+9x+18\right)=28\)
f) \(3\left(-x^2+2x+3\right)^4-26x^2\left(-x^2+2x+3\right)^2-9x^4=0\)
g) \(x^4+6x^3+11x^2+6x+1=0\)
h) \(\left(x-3\right)\left(x-5\right)\left(x-6\right)\left(x-10\right)-24x^2=0\)
i) \(\left(x+2\right)^4+\left(x+8\right)^4=272\)