- How do I become an astronaut??? What kind education? What to study? Grades??

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Find the real solutions of the equations 12x^4-x^2-1=0.I ended up with the square root of 1/3 but the answer was +- square root of 3 over 3.? In 7.50 moles of Na2SO4, how many moles of sodium are there? Help pleas. I'm having a hard time.? In one mole of K3PO4 how many moles of potassium are there? How mang moles of phosphorus? How mang moles of oxygen? What is it like to receive an organ transplant? Which equation can be solved to find x, the measure of BD in the diagram below?