1){x-y=3 {xy=18 2){xy-2(x+y)=2 {xy+x+y=29 3){x-y=2 {2x^2+9xy+25y+44=0

Question

1){x-y=3
{xy=18





2){xy-2(x+y)=2
{xy+x+y=29




3){x-y=2
{2x^2+9xy+25y+44=0

Answer 1

Остальное лень, лол. сорян

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