(q2 – 4)/q2 = - 3

(x) ^{(q2 – 4)}/_q2 = - 3

Sol. ^{(q2 – 4)}/_q2 = - 3

Multiplying with q² on both the sides, we get

q² – 4 = - 3q²

∴  q² + 3q² – 4 = 0

∴  4q2 – 4 = 0

∴  4q² + 0q – 4 = 0

Here a = 4, b = 0, c = – 4 are real numbers

where a ≠ 0

So it is a quadratic equation in variable q.