Oh, dude, x times xy is just x squared y. It's like multiplying x by itself and then throwing in a y for good measure. So, if x was 2 and y was 3, you'd get 2 squared times 3, which is 4 times 3, which is 12. Math can be fun, right?
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x times y is "xy"
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.
x+xy=8 xy=-x+8 y=-1+8/x
1, 3, x, y, 3x, 3y, and xy are the factors of the expression 3xy
x times y or, symbolically, either x*y or simply xy (where context allows, also X x Y)