Question

Q6.Show that: i) (p-q)(p+q)+(q-r)(q+r)+(r-p)(r+p)=0​

Answer 1

=(p)²-(q)²+(q)²-(r)²+(r)²-(p)²

=0

Step-by-step explanation:

In math there is a formula, when (a-b) (a+b) = a²+ b² so I put this Formula here

Answer 2

Answer:

I don't know please it your self