-2
There is no pair of numbers (x, y) that fits both of those equations.
The graphs of those equations are parallel lines. Since they don't intersect,
there's no point on the graph that satisfies both equations.
x+xy=8 xy=-x+8 y=-1+8/x
2+2y+x+xy=(x+2)(y+1)
xy + x + y + 1 is an expression, not an equation. An expression cannot be solved.
So far you know that: x=-8 xy=1 so xy means x times y. If you split xy. y=1/x or y=1/-8 1/-8= -0.125 You can find out that this is correct with the formula xy=1 because -0.125 x -8 is 1.
If Y = 0 then there is no value of X such that XY = 1.
x+xy=8 xy=-x+8 y=-1+8/x
It equals y+1
xy = x ÷x y = 1
xy + x + y + 1 = (x + 1)(y + 1).
xy + y = z xy = z - y (xy)/y = (z - y)/y x = (z - y)/y
(x-y) + (xy - 1) = (x - 1)(y + 1)
2+2y+x+xy=(x+2)(y+1)
xy + x + y + 1 is an expression, not an equation. An expression cannot be solved.
So far you know that: x=-8 xy=1 so xy means x times y. If you split xy. y=1/x or y=1/-8 1/-8= -0.125 You can find out that this is correct with the formula xy=1 because -0.125 x -8 is 1.
y=(x+2)/(x+10) xy+10y=x+2 xy-x=2-10y x(y-1)=2-10y x=(2-10y)/(y-1)
4
If Y = 0 then there is no value of X such that XY = 1.