Bài 1: Tìm x, y biết:

a) \(\left(3-2x\right)^2+\left(y-5\right)^{20}\le0\)

b) \(\left(2x-1\right)\left(x+2\right)\ge0\)

c) \(\left(x-3\right)\left(x-4\right)\le0\)

d) \(x^2-7x\le0\)

e) \(x^2+4x\ge0\)

Bài 2: Tìm x,y nguyên biết:

a) \(y^2-3xy-1=0\)

b) \(y^2-4xy-5=1\)

c) \(\left(x-12\right)\left(y+5\right)=7\)

d) \(xy-2x+3y=8\)

e) \(2xy-3x+y-3=5\)