Find the roots of the given quadratic equations using the indicated method. 1. find the roots of x² - 324 = 0 by extracting square root.
2.find the roots of x² + 10x + 16 = 0 by factoring.
3.determine the roots of x² - 2x + 1 = 0 using completing the square.
4.use the quadratic formula to find the roots of 3x² + x - 1 = 0.
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