- What is PQS?

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How often are rain forecasts at least 6 or 7 days in advance ever correct? Why are seeds important in the life cycle of plants? I need help with 2 unusual factoring problems. Problem 1: 4x^4+32x^3+47x^2-8x-12
Problem 2: x^6 - x^4 - x^2 + 1? What is the form of the Difference of Squares identity? What is the potassium content of potato starch?