#STEM and #PublicEducation are critical to our future…(a square root of a number x is a number y such that y² = x; in other words, a number y whose square is x. For example, 4 and −4 are square roots of 16, because 4² = ² = 16)
source https://www.facebook.com/usaprogressive/photos/a.918883178274165/2041511072678031/?type=3
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