a: \(\left(3x+2\right)^2+4x-3x^2+2\left(5x-2\right)\left(5x+2\right)-75x^2\)
\(=9x^2+12x+4+4x-3x^2+50x^2-8-75x^2\)
\(=-19x^2+16x-4\)
Rut gon bieu thuc
a) x(2x2-3)-x2(5x+1)+x2
b)3x(x-2)-5x(1-x)-8(x2-3)
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 cac bieu thuc
a) \(4x^2\left(5x^2-2x+3\right)\)
b)\(\left(x+2\right)\left(x-2\right)-\left(x+2\right)^2\)
c)\(\left(3x-5\right)\left(2x+11\right)-\left(2x+3\right)\left(3x+7\right)\)
Rut gon cac bieu thuc sau:
2(x-y).(x+y)+(x-y)^2+(x+y)^2
(2x-3).(4x^2+6x+9) -(54+8x)
(3x+y).(9x^2-3xy+y^2)-(3x-y).(9x^2+3xy+y^2)
(a +b +c)^2-(a-c)^2-2ab+2bc
cho A= (2x-1)^2 -5x.(x-1)+2.(x+1).(x-2) rut gon bieu thuc A
Rut gon A=3x^3-7x^2+5x-1 / 2x^3-x^2-4x+3
1.Phan tich da thuc thanh nhan tu
A.(x^2-2x)(x^2-2x-1)-6
B.x^3-2x-1
2.Rut gon roi tinh gia tri bieu thuc khi x=2
1/x^2+x + 1/x^2+3x+2 + 1/x^2+5x+6 + 1/ x^2+7x+12
