
Alex C. answered 12/20/13
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A B.S. in Math Education and 8+ Years of Experience
A punnet square is an idea generated by geneticists which has been used to describe how many different ways x amount of items can be combined with y amount of items
in genetics we see
x y
x xx xy
x xx xy
in mathematics we can use it to foil
2x 3
2x 4x^2 6x
3 6x 9
so short and simple a punnet square is an idea that is used to generate all the possibilities of x and y combined.