Decades: 60s BC 50s BC 40s BC 30s BC 20s BC - 10s BC - 0s 10s 20s 30s 40s
Years: 24 BC 23 BC 22 BC 21 BC 20 BC 19 BC 18 BC 17 BC 16 BC 15 BC 14 BC
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... of "=", that will make it a perfect square trinomial of the form x2 + 2xy + y2. Since "2xy" in this case is (b/a)x, we must have y = b/(2a), so we add the square of ...