You arrange 12 toothpicks into a large square, subdivided into four squares : 2 toothpicks on each side and four more, one each from the middle of the sides to the center of the large square. Now you...
(-2)2 = (-2)(-2) = 4 (when we raise a negative number to an even power, the result is always positive) (-2)3 = (-2)(-2)(-2) = -8 (when we raise a negative number to an odd power, the result is always...