Phân tích đa thức sau thành nhân tử
a, (x+5)^2-4x(2x+3)^2-(2x-1)(x+3)(x-3)
b, -2x(3x+2)(3x-2)+5(x+2)^2-(x-1)(2x-1)(2x+1)
c, (7x-8)(7x+8)-10(2x+3)^2+5x(3x-2)^2-4x(x-5)^2
d, (x^2-3)(x^2+3)-5x^2(x+1)^2-(x^2-3x)(x^2-2x)+4x(x+2)^2
e,-6x^2(x+5)^2-(x-3)^2+(x^2-2)(2x^2+1)-4x^2(3x-4)^2
f, (5x-3y)^2-(4x+y)(4x-y)-(3x+5y)^2+(x-3y)(x+y)
g, (-4x+2y)(-4x-2y)+(x-5y)^2-(3x+2y)^2-7x(x-3y)
b, -2x(3x+2)(3x-2)+5(x+2)^2-(x-1)(2x-1)(2x+1)
c, (7x-8)(7x+8)-10(2x+3)^2+5x(3x-2)^2-4x(x-5)^2
d, (x^2-3)(x^2+3)-5x^2(x+1)^2-(x^2-3x)(x^2-2x)+4x(x+2)^2
e,-6x^2(x+5)^2-(x-3)^2+(x^2-2)(2x^2+1)-4x^2(3x-4)^2
f, (5x-3y)^2-(4x+y)(4x-y)-(3x+5y)^2+(x-3y)(x+y)
g, (-4x+2y)(-4x-2y)+(x-5y)^2-(3x+2y)^2-7x(x-3y)