\(=\dfrac{x+x-2-2x-4}{\left(x-2\right)\left(x+2\right)}\cdot\dfrac{x+2}{1-x}=\dfrac{-6}{\left(1-x\right)\left(x-2\right)}\)
\(=\dfrac{x+x-2-2x-4}{\left(x-2\right)\left(x+2\right)}\cdot\dfrac{x+2}{1-x}=\dfrac{-6}{\left(1-x\right)\left(x-2\right)}\)
8(x+1/x)^2+4(x^2+1/x^2)^2-4(x^2+1/x^2)(x+1/x)^2=(x+4)^2
8(x + 1/x)^2 +4(x^2 + 1/x^2)^2 -4(x^2 + 1/x^2)(x + 1/x)^2=(x + 4)^2
8(x+ 1/x)^2 +4(x^2 + 1/x^2) -4(x^2+ 1/x^2)(x+ 1/x)^2 = (x+4)^2
Giải phương trình
1)(x-2)(x-1)=x(2x+1)+2
2)(x+2)(x+2)-(x-2)(x-2)=8x
3)(2x-1)(x^3-x+1)=2x^3-3x^2+16=0
4)(8x-3)(3x+2)-(4x+7)(x+4)=(2x+1)(5x-1)
5)(8-5x)(x+2)+4(x-2)(x+1)+2(x-2)(x+2)=0
6)4(x-1)(x+5)-(x+2)(x+5)=3(x-1)(x+2)
bài 1 rút gọn biểu thức
a) (2x-5)^2-4x(x+3)
b) (x-2)^3 -6(x+4)(x-4)-(x-2)(x^2+2x+4)
c)(x-1)^2-2(x-1)(x+2)+(x+2)^2+5(2x-3)
bài 2 rút gọn biểu thức
a)(2-3x)^2-5x(x-4)+4(x-1)
b)(3-x)(x^2+3x+9)+(x-3)^3
c)(x-4)^2(x+4)-(x-4)(x+4)^2+3(x^2-16)
giải phương trình8(x+1/x)^2+4(x^2+1/x^2)^2-4(x^2+1/x^2)(x+1/x)^2=(x+4)^2
1) (3x-2)/3-2=(4x+1)/42) (x-3)/4+(2x-1)/3=(2-x)/63) 1/2 (x+1)+1/4 (x+3)=3-1/3 (x+2)4) (x+4)/5-x+4=x/3-(x-2)/25) (4-5x)/6=2(-x+1)/2 6) (-(x-3))/2-2=5(x+2)/4 7)2(2x+1)/5-(6+x)/3=(5-4x)/158) (7-3x)/2-(5+x)/5=1 9)(x-1)/2+3(x+1)/8=(11-5x)/310)(3+5x)/5-3=(9x-3)/4
8(x+1/x)^2+4(x^2+1/x^2)^2-4(x^2+1/x^2)(x+1/x)^2=(x+4)^2
giải phương trình 8(x+1/x)^2+4(x^2+1/x^2)^2-4(x^2+1/x^2)(x+1/x)^2=(x+4)^2
Giải phương trình: 8(x+1/x)^2 + 4(x^2+1/x^2)^2 - 4(x^2+1/x^2)(x+1/x)^2=(x+4)^2