How do i write the expression of: the square of the distance from point A to point B minus 81?

Jun 10, 2018

${d}^{2} - 81$

Explanation:

Let distance between Point A and Point B be d

"the square of the distance from point A to point B"
means the distance squared or ${d}^{2}$

"minus 81"
means that the distance between point A and point B has 81 subtracted from it or ${d}^{2} - 81$