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Discover Questions

If x^2+y^2 = 6, and x+y=3, then what is x^3+y^3? In one mole of the compound iron(III) oxide,
what fraction of the total number of ions is
the oxygen ion? How many milliliters of concentrated of sulfuric acid (18 M) are required to make 7.0 L of 0.12M H2SO4? Make a conjecture about the next item in the sequence.1, -4, 9, -16,? Find all solutions to the following system of nonlinear equations.
(x − 2)^2 + y ^2 = 20
(x + 2)^2 + y^ 2 = 20?