If x = √144 ÷ √36 × √49, then what is the value of x²?
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Correct answer: C
Explanation
Given:
x = √144 ÷ √36 × √49
According to the formulas:
√a × √b = √(ab), and √a ÷ √b = √(a/b)
√144 = 12, √36 = 6, √49 = 7
x = 12 ÷ 6 × 7
x = 2 × 7
x = 14
x² = (14)² = 196