Question

CLASS_8th , NCERT

(a) Add: p(p-q),q(q-r) and r(r-p).

(b) Add: 2x(z-x-y) and 2y(z-y-x).


give answer step-by-step explanation please..​

Answer 1

Answer:

Mark me as a brillant

Step-by-step explanation:

(a)

$p(p - q) + q(q - r) + r(r - p) \\ = {p}^{2} - pq + {q}^{2} - qr + {r}^{2} - rp \\ = (p + q + r) ^{2} - (pq - qr - rp)$

(b)

$2x(z - x - y) + 2y(z - x - y) \\ = 2xz - 2x ^{2} - 2xy + 2yz - 2xy - 2y ^{2} \\ = 2xz - 2xy - 2xy + 2yz - 2(x + y) ^{2} \\ = 2xz - 4xy + 2yz - 2(x + y) ^{2}$

Answer 2

Answer:

Ha bro thik hu myself prem

Step-by-step explanation:

bro me bhi bore ho raha hu