rut gon bieu thuc: 2x2(x-2) - 2x(x-1)(x+1)
cho A= (2x-1)^2 -5x.(x-1)+2.(x+1).(x-2) rut gon bieu thuc A
rut gon bieu thuc :P=5x(x-3)(x+3)-(2x-3)^2+34x(x+2)-5(x+2)^3+25x-1
Rut gon bieu thuc sau: 2x*(2x-1)2-3x*(x+3)2-4x*(x+1)2
rut gon cac bieu thuc
2x(2x+1)2 - 3x(x+3)(x-3) - 4x (x+1) 2
rut gon bieu thuc (2x+3) mũ 2 +(2x+5) mũ 2
rut gon bieu thuc
B= (2x+1)2-(2x+1)(2x-1)
rut gon bieu thuc.
A)(X^2-1).(X+2)-(X-2).(X^2+2X+4)
B)(2X+3)^2+(2X+5)^2-2.(2X+5).(2X+3)
rut gon bieu thuc a,(3x+2)^2+4x-3^2+2(5x-2)(5x+2)-75x^2
b,(x-2)^3+(2x+1)^3++2(x+2)(1-x)-9x^3+2x