Use your exponent laws to split the exponent addition into multiplication:
We also know that so we can say that
Collect terms with x on the LHS and those without on the RHS:
We also know that and hence the LHS is equal to
Can you solve for x using logarithms from here?
Edit: An alternative method is to use factorisation.
Take the log of both sides directly:
Expand the brackets:
Collect like terms:
Factor the LHS:
Divide through to solve for x
Both methods are good so use your favourite choice. They will probably be expressed differently but they're both the same answer