Question

Sabendo que T=(X+2y), calcule T^2

Answer 1

${x}^{2} + 4xy + {4y}^{2}$

Answer 2

Sabendo que
T=(X+2y), calcule T^2

T = (x + 2y)
T² = ??
(x + 2y)² =
(x + 2y)(x + 2y) =
x² + 2xy +  2xy + 4y²
x² + 4xy + 4y² ( resposta)