1. Participial
2. Gerund
3.participal
4.participal
4.infinitive
The square of a binomial expands as follows:

Expanding all the binomials, we have

Sum like terms:

Simplify terms appearing on both sides:

Move all terms involving k to the left and all numbers to the right:

Divide both sides by -20:

The general equation of a line is:

When m is the gradient and x1 and y1 are the coordinates of the points on the line
Therefore:

