phan tich cac da thuc sau thanh nhan tu :
a,2x+ 2y
b,5x+20y
c,6xy-30y
d,5x(x-110-10y(x-11)
e,x\(^3\)-4x\(^2\)+x
f,x(x+y)-(2x+2y)
h,5x(x-2y)+2(2y-x)
i,x\(^2\)y\(^3\)-\(\dfrac{1}{2}\)x\(^4\)y\(^8\)
j, a\(^2\)b\(^4\)+a\(^3\)b-abc
k, -x\(^2\)y\(^2\)z-6x\(^3\)y-8x\(^4\)z\(^2\)-9x\(^5\)y\(^5\)z\(^5\)
l, 7x(y-4)\(^2\)-(4-7)\(^3\)
a, 2x + 2y = 2(x + y)
b, 5x + 20y = 5x + 4.5y = 5(x + 4y)
c, 6xy - 30y = 6xy - 5.6y = 6y(x - 5)