Question

Plz solve this all by only cross multiplication method class 10th chapter 3rd. who solve this I mark you brainlist .​

Answer 1

Answer:

ok I try to answer your question

Answer 2

(i) px + qy = p – q ---------(i)

qx – py = p + q ---------(ii)

Multiplying p to equation (1) and q to equation (2), we get

p²x + pqy = p² − pq -----------(iii)

q²x − pqy = pq + q² ----------- (iv)

Adding equation (iii) and equation (iv),we get

p²x + q²x = p² + q²

(p²+q²)x=p²+q²

x = (p² + q²)/ p² + q² = 1

From equation (i), we get

p(1) + qy = p – q

qy = p-q-p

qy = -q

y = -1