giải các phương trình sau
a)(x+5)*(2x-1)=(2x-3)(x+1)
b)(x+1)(x+9)=(x+3)(x+5)
c)(3x+5)(2x+1)=(6x-2)(x-3)
d)(x+2)^2+2(x-4)=(x-4)(x-2)
e)(x+1)(2x-3)-3(x-2)=2(x-1)^2
f)(3x+2)^2-(3x-2)^2=5x+38
g)3(x-2)^2+9(x-1)=3(x^2+x-3)
h)(x+3)^2-(x-3)^2=6x+18
i)(x-1)^3-x(x+1)^2=5x(2-x)-11(x+2)
k)(x+1)(x^2-x+1)-2x=x(x-1)(x+1)
GIÚP MÌNH VỚI !!!!!
