Question

O desenvolvimento de (1 + xyz)² é: *
(A) 1 + 2xyz
(B) 1 + 2x²y²z²
(C) 1 + xyz + x²y²z²
(D) 1 + 2xyz + x²y²z²
(E) 2x²y²z² + 4xyz

Answer 1

letra d) 1+2xyz+x2y2z2