Please could anyone help with this problem please? I know the answers from an answer sheet (x=1 and x=ln12/ln4) , but I have no idea how the answers were reached.
Please could anyone help with this problem please? I know the answers from an answer sheet (x=1 and x=ln12/ln4) , but I have no idea how the answers were reached.
Many thanks
4^2x + 48 = 4^(x+2)
let ...
solve the quadratic for u by factoring ... then solve for x