Question

simplify the expression (p^2q+r^2)+(q^2+r^2)+(r^2+p^2)+(p+q+r)
please answer!!!!​

Answer 1

Answer:

= 2p²+2q²+3r²+p+q+r

Step-by-step explanation:

(p²+q²+r²)+(q²+r²)+(r²+p²)+(p+q+r)

= 2p²+2q²+3r²+p+q+r

Answer 2

Answer:

0

Step-by-step explanation:

(p−2q+r)

2

−(−p+2q−r)

2

Using a

2

−b

2

=(a+b)(a−b)

=(p−2q+r−p+2q−r)[p−2q+r−(−p+2q−r)]

=0