Rút gọn biểu thức:
\(E=\left(\frac{4x^2+2x}{1-4x^2}-\frac{4x^2-2x}{1+4x^2}\right):\left(\frac{1+2x}{1-2x}-\frac{1-2x}{1+2x}\right)\)
1-2x/2x + 2x/2x-1 + 1/2x-4x^2
thực hiện phép tính
\(\dfrac{11x}{2x-3}+\dfrac{x-18}{2x-3}\)
\(\dfrac{2x+12}{4x^2-9}+\dfrac{2x+5}{4x-6}\)
\(\dfrac{x}{2x+1}+\dfrac{-1}{4x^2-1}+\dfrac{2-x}{2x-1}\)
1-2x/2x+2x/2x-1+1/2x-4x^2
(2x-3)^2+(2x-1)(2x+1)-(2x+1)(4x^2-2x+1)+8x^3(x-1)=13
Rút gọn biểu thức :
e) \(\left(\frac{4x^2+2x}{1-4x^2}-\frac{4x^2-2x}{1+4x^2}\right):\left(\frac{1+2x}{1-2x}-\frac{1-2x}{1+2x}\right)\)\()\)
Tìm x:
a) (x-1) - (x+1) - (x-2) = 5
b) (2x-1) mũ 2 - (2x+3) mũ 2 = 7
c) (4x-3).(4x+3) - (4x-1) mũ 2 = 8
d) (2x+1).(2x-1) - (2x+3) = 9
P)(9-x)(x^2+2x-3) n)(-x+3)(x^2+x+1) O)(-6x+1/2)(x^2-4x+2) q)(6x+1)(x^2-2x-3) r)(2x+1)(-x^2-3x+1) U)(2x-3)(-x^2+x+6) s)(-4x+5)(x^2+3x-2) V)(-1/2x+3)(2x+6-4x^3)
(2x + 1 - 1/1-2x):(2x- 4x2/2x-1)
