Question

二元二次方程 X²+2y+y√2=17-4√2 怎么解

Answer 1

x²+2y+y√2=17-4√2

y√2=-4√2

y=-4

x²+2y=17

x²+2*(-4)=17

x²-8=17

x²=25

x=±5

综上x=5,y=-4或x=-5,y=-4