Question

simplify (px+qy)^2 - (qx+py)^2
please right answer please friend ​

Answer 1

Step-by-step explanation:

px+qy=p−q…(i)

qx−py=p+q…(ii)

Multiplying (i) by p and (ii) by q we get (iii) and (iv) respectively as

p

2

x+pqy=p

2

−pq…(iii)

q

2

x−pqy=pq+q

2

…(iv)

Adding (iii) and (iv) we get,

(p

2

+q

2

)x=(p

2

+q

2

)

⇒x=1

Substituting value of x in (i), we get

p+qy=p−q

qy=−q

y=−1

Hence, x=1,y=−1

hope you have got it

Answer 2

Answer refer to the attachment