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If a+b+c=4, ab+ac+bc=6, and abc=3, what is 1/a + 1/b + 1/c? Problem involving math induction! If m and n are distinct real numbers, prove that (m+2)^2 = (n+2)^2 if and only if x+y=-4? 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? Name a class of annelids whose members may have protonephridia?