Solve $4^x=4^8$4x=48.

Solve $x^5=3^5$x5=35.

Solve $9^x=9^{-4}$9x=9−4.

Solve $8^{-7}=x^{-7}$8−7=x−7.

Form and use trigonometric, polynomial, and other non-linear equations

Apply trigonometric methods in solving problems