Y=log[4](x^2-4x-21)

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Solution for Y=log[4](x^2-4x-21) equation: 


Simplifying
Y = log[4](x2 + -4x + -21)

Reorder the terms:
Y = glo * 4(-21 + -4x + x2)

Reorder the terms for easier multiplication:
Y = 4glo(-21 + -4x + x2)
Y = (-21 * 4glo + -4x * 4glo + x2 * 4glo)
Y = (-84glo + -16glox + 4glox2)

Solving
Y = -84glo + -16glox + 4glox2

Solving for variable 'Y'.

Move all terms containing Y to the left, all other terms to the right.

Simplifying
Y = -84glo + -16glox + 4glox2

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