Rosy wants a large picture window. It has a area of 49 . How long is each side?
if a window has area of 49 how much is each sidethis is roots
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I am assuming that the window is a perfect square.
x=7 or -7, -7 is not a measurement.
You asked about "roots". We can do this more elaborately...
Either parenthetical equation must equal zero.
x=-7, not applicable.