Solve $8x^{-2}-6x^{-1}+1=0$8x−2−6x−1+1=0.

Solve $-15x^{-2}+4x^{-1}+3=0$−15x−2+4x−1+3=0. Write all solutions on the same line, separated by a comma.

Solve $2x^{-2}+x^{-1}=6$2x−2+x−1=6.

Solve $\frac{y^{\frac{5}{7}}-y^{-\frac{2}{7}}}{y}=0$y57−y−27y=0.

Form and use linear, quadratic, and simple trigonometric equations

Apply graphical methods in solving problems

Apply algebraic methods in solving problems