Bunuel wrote:
Which of the following is NOT equivalent to \(49a^2 = 9b^2 - 4\)?
A. \(49a^2 + 4 = 9b^2\)
B. \(98a^2 = 18b^2 - 8\)
C. \(49a^2 = (3b - 2)(3b + 2)\)
D. \(a^2 = \frac{9b^2 - 4}{7^2}\)
E. \(7a = 3b - 2\)
Let’s analyze each answer choice.
A. 49a^2 + 4 = 9b^2
If we subtract 4 from both sides of the equation, we have 49a^2 = 9b^2 - 4. This is equivalent.
B. 98a^2 = 18b^2 - 8
If we divide both sides of the equation by 2, we have 49a^2 = 9b^2 - 4. This is equivalent.
C. 49a^2 = (3b - 2)(3b + 2)
If
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