Discover Questions

Make a conjecture about the next item in the sequence.1, -4, 9, -16,? In one mole of the compound iron(III) oxide,
what fraction of the total number of ions is
the oxygen ion? White light is directed at difraction grating at angle normal to gratting.starting at norml to grating 0dgre the odr of red,gren,blue wil be? Number Theory: Find the roots of 4x^2+6x+1 in Z11 (could you please explain step by step? THANKS!)? What can you tell me about the flower of life? Sacred geometry? Where does it come from?