Question

Pls help me with this.
1) p(p+2(q-r))+q(q-2(p-r))+r(r+2(p-q))=p²+q²+r²
2) 2a(bc+d(b-c))-2b(ca-d(c-a))-2c(ab-d(a-b))=-2abc

Answer 1

Answer:

6pqu² is the answer for 1st one

6abc is the answer for 2nd one

hope it helps you please mark me as a brainlist