Question

simplify (p2-q+r)+(q2-r+p)+(r2-p+q)

Answer 1

Answer:

p2 + q2 + r2

Step-by-step explanation:

(p2-q+r)+(q2-r+p)+(r2-p+q)

= p2-q+r+q2-r+p+r2-p+q

= p2 + (-q+q) + (r-r) + q2 + (p-p) + r2

= p2 + 0 + 0 + q2 + 0 + r2

= p2 + q2 + r2