Question

Por favor, alguém me ajuda!!
(X + Y)²
(X + 2)²
(3x + 2)²
(2x + 1)²
(5 + 3x)²​

Answer 1

(x + y) . (x + y) = x² + 2xy + y²

(x + 2) . (x + 2) = x² + 4x + 4

(3x + 2) . (3x + 2) = 9x² + 12x + 4

(2x + 1) . (2x + 1) = 4x² + 4x + 1

(5 + 3x) . (5 + 3x) = 25 + 30x + 9x²

Answer 2

x² + 2xy + y²

x² + 4x + 4

???

4x² + 4x + 1

???