Ответ:
{√(5/6);3√(5/6)}
{-√(5/6);-3√(5/6)}
Объяснение:
{9x²-xy=5
{y²-5xy=-5
{9x²-6xy+y²=0
{9x²-xy=5 9x²-3x²=5 x²=5/6 x=√(5/6)
{(3x-y)²=0 y=3x y=3√(5/6)
y²=9*5/6=7,5
5xy=5*3*5/6=12,5
xy>0
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Ответ:
{√(5/6);3√(5/6)}
{-√(5/6);-3√(5/6)}
Объяснение:
{9x²-xy=5
{y²-5xy=-5
{9x²-xy=5
{9x²-6xy+y²=0
{9x²-xy=5 9x²-3x²=5 x²=5/6 x=√(5/6)
{(3x-y)²=0 y=3x y=3√(5/6)
y²=9*5/6=7,5
5xy=5*3*5/6=12,5
xy>0
{√(5/6);3√(5/6)}
{-√(5/6);-3√(5/6)}