3x+4y=a23 x+4 y=a^{2}3x+4y=a2
6x+8y=a6 x+8 y=a^{}6x+8y=a
4x+3y=a24 x+3 y=a^{2}4x+3y=a2
3x+4y=a3 x+4 y=a3x+4y=a