Question

Desenvolva as expressões a seguir:

Desenvolva as expressões a seguir:

(x + 2y)2 =




(3x – 2y)2 =




(5x2 + 1) . (5x2 – 1) =




(x + 2y)2 =





(3x – 2y)2 =





(5x2 + 1) . (5x2 – 1) =

Answer 1

Resposta:

(x + 2y)2 =

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

(3x – 2y)2 =

$9 {x}^{2} - 12xy + 4 {y}^{2}$

(5x2 + 1) . (5x2 – 1) =

$25 {x}^{4} - 5 {x}^{2} + 5 {x}^{2} - 1 \\ 25 {x}^{4} - 1$

(x + 2y)2 =

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

(3x – 2y)2 =

$9 {x}^{2} - 12xy + 4 {y}^{2}$

(5x2 + 1) . (5x2 – 1) =

$25 {x}^{4} - 1$