Question

Q.Show that : (p – q)(p + q) + (9 – r)(q + r) + (r – p)( r + p) = 0​

Answer 1

Answer:

Let

. Which of the following is an equivalence relation on

? (a)

(b)

(c)

(d) one of these

Answer 2

SORRY MATE...U HAD DONE A MISTAKE IN THE QUESTION

I think the question is = (p-q)(p+q) + (q-r)(q+r) + (r-p)(r+p)

So according to the correct question ,

we know (a-b)(a+b) = a²-b²

Therefore,

[(p-q)(p+q)] + [(q-r)(q+r)] + [(r-p)(r+p)] = 0

p²-q² + q²-r² + r²-p² =0

AFTER SIMPLIFYING,

0=0

HOPE IT HELPS U MATE.......PLS PLS PLS PLS PLS PLS PLS PLS PLS PLS PLS MARK MY ANSWER AS BRAINLIEST ANSWER