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Problem Solving (PS) | Which of the following equations is NOT equivalent to 4x^2 = y^2 - 9 ?

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TheKingInTheNorth wrote:

Which of the following equations is NOT equivalent to \(4x^2\) = \(y^2\)- 9 ?

(A) \(4x^2\)+ 9 = \(y^2\)
(B) \(4x^2\) - \(y^2\) = -9
(C) \(4x^2\)= (y + 3)(y - 3)
(D) 2x = y - 3
(E) \(x^2\) = (\(y^2\)-9)/4

Edit: Formatting



We can always look for number plugging method as well because sometimes equations get difficult to be compared.

Here taking x =2 & y =5 satisfies the equation, plugging the same number in the list of options only D : 2x = y -3 does not satisfy the equation.

Hence D
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