Question 56835
{{{x^(a+4)=x^4x^8}}}  Solve for a.
{{{x^(a+4)=x^(4+8)}}}
{{{x^(a+4)=x^12}}}  the bases are equal so equate their exponents:
a+4=12
a+4-4=12-4
a=8
Happy Calculating!!!