Arturo O. answered • 05/29/20
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x2 + 4x - y2 + 4 = (x2 + 4x + 4) - y2 = (x + 2)2 - y2 = [(x + 2) - y] [(x + 2) + y]
Allan C.
asked • 03/11/15x squared plus 4x -y squared plus 4
factor polynomials
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