Practice problem
Solve for xxx. x2=81x^2=81x2=81
x=±9x=\pm9x=±9
x=±6561x=\pm6561x=±6561
x=±40.5x=\pm40.5x=±40.5
x=±8x=\pm8x=±8
Type a concept, like “slope” or “photosynthesis”.
