Consider the following for the next two (02) items that follow: Let p = x^4 - y^2z^2, q = y^4 - z^2x^2, r = z^4 - x^2y^2. What is x^2(px^2 + qy^2 + rz^2) + qr - p^2 equal to ?
0
1
p + q + r
x^2 + y^2 + z^2
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