Determine which of the following methods is the best choice for solving the given equation: factoring, using the principle of square roots or using the quadratic formula. Then, solve the equation.x2 - 49 = 0
A. Square root principle or factoring; ±7
B. Factoring; 0, 7
C. Quadratic formula; -7 + i
D. Square root principle or factoring; 7
Answer: A
Mathematics
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