3 years ago

How did they get this

Mathematics

2 answers:

alexandr1967 [171]3 years ago

7 0

It's only true if x=2 and y= -1 .

katrin2010 [14]3 years ago

3 0

Somewhere in the text, it must say that x = 2 and y = -1 or else, the values just seem made up out of thin air.

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