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**21**.12.2012 has been interpreted by some as being the end...the world. Only one Mayan calendar even has December**21**, 2012 on it: the Mayan Long Count calendar. In short...14 Answers · Society & Culture · 12/04/2011

Let solve the equation: x³ - 2x -

**21**= 0 x³ - 2x -**21**= 0 → x = u + v (u + v)³ - 2(u + v) -**21**= 0...)] - 2(u + v) -**21**= 0 [(u³ + v³) + 3uv(u + v)] - 2(u + v) -**21**= 0 (u³ + v³) + 3uv(u + v) - 2(u + v) -**21**= 0 (u³ + ...4 Answers · Science & Mathematics · 16/09/2013

Dec

**21**2012 date is based on the last day of the ancient mayan long count calender... theory is a modern theory of why the long count calender ends on dec**21**2012, but we have nothing from the ancient mayans that says it's a...9 Answers · Science & Mathematics · 18/12/2012

~ SPORTS/COMEDY ANIME ~ *eyeshield

**21**IS UNIQUE AND THERE IS NO OTHER...5 Answers · Entertainment & Music · 16/09/2010

Forever

**21**is very cheap. The prices are usually from 7 to 25 ..., is not at all the same price range as Forever**21**, forever**21**is very inexpensive for it being trendy. Hollister...10 Answers · Beauty & Style · 01/04/2012

10x² + 50x -

**21**= 0 It can't be factored, so complete the square or use the quadratic...38963666 x ≈ 0.39 or -5.39 To complete the square instead 10x² + 50x -**21**= 0 x² + 5x -**21**/10 = 0 Add**21**/10 to both sides x²...1 Answers · Science & Mathematics · 28/11/2008

hey there. my

**21st**is in june & i'm having a black and white party at my uncle...2 Answers · Society & Culture · 06/01/2008

5x² - x -

**21**= 0 It's just not as obvious as some and you have to use some trial and...use the quadratic formula. x = [-b ± √(b² - 4ac)] / 2a x = [1 ± √(1 - 4(5)(-**21**))] / 2(5) x = [1 ± √(1 + 420)] / 10 x = [1 ± √421] / 10 or x = 2.15182845 or...17 Answers · Science & Mathematics · 16/11/2008

5x - 6y =

**21**--- eqn 1 x - 2y = 5 --- eqn 2 => In eqn 2, make x the subject of formula...eqn 3 => Substitute 5 + 2y for x in eqn 1, i.e. 5(5 + 2y) - 6y =**21**=> Remove the paranthesis at the left hand side by simply ...3 Answers · Education & Reference · 05/09/2013

Century

**21**Real Estate LLC is a real estate agent franchise company... Estate. The name comes from the Century**21**Exposition held in Seattle, Washington in 1962...1 Answers · Business & Finance · 13/07/2007