Question

(2x + y) · (2x – y)
(x3 – 5x)2
(5x + 6y)2
(2x2 – 5x)2
(x2 + 3) · (x2 – 3)

Answer 1

Respuesta:

(2x + y) · (2x – y)  = 4x²-y²

(x3 – 5x)2  = $x^{6}$ -10x + 25x²

(5x + 6y)2  = 25x² + 60xy + 36y²

(2x2 – 5x)2  = $4x^{4}$ - 20x³ + 25x²

(x2 + 3) · (x2 – 3) = $x^{4}$ - 9