Which represents a quadratic function?
Of(x) = -8x3 – 16x2 - 4x
f(x) = 3/4x2 + 2x - 5
PX) = 4/x^2-2/x +1
f(x) = 0x2 - 9x + 7

take the logarithm of both sides (the base of the log doesn't matter):

apply the exponent property - this says that :

distribute the log terms on both sides:

group like terms together:

divide through both sides by the coefficient on :

you can do some additional rewriting here using the properties of the logarithm to simplify things if you like:

answer: the answer is d

simplified version :

3y^2-10y^2x^4+40x^2+3y^2/2x^2