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How to use the quadratic formula to solve graphing quadratic equations? 8 unit squares are arranged to form a polygon. How many units are in the minimum perimeter of such a polygon? Show that the pairs of circles cut orthogonally x²+y²+6y-5=0, x²+y²-8x+5=0? How were DNA/RNA first created? They only bond in one direction not in random ways like evolutionary theory would suppose.? Can I get help with the properties of the periodic table lab?