Tough and Tricky questions: Algebra.
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
Kudos for a correct solution.
Tough and Tricky questions: Algebra.