Question

(2x-3y)^{2}

(1 -3y)^(2)

(x + 3) . (x - 3)


(y^(2) + 4x) . (y^(2) - 4x)

Answer 1

Resposta:

(2x-3y)^{2}

$\sf{(2x) {}^{2} - 2.2x.3y + (3y) {}^{2} }$

$\sf{4 {x}^{2} - 2.2x.3y + (3y) {}^{2} }$

$\sf{4 {x}^{2} - 12xy + (3y) {}^{2} }$

$\rightarrow\boxed{\boxed{\sf{4 {x}^{2} - 12xy +9 {y}^{2} }}}\checkmark$

(1 -3y)^(2)

$\sf{1 - 6y + 9 {xy}^{2} }$

$\rightarrow\boxed{\boxed{\sf{9 {y}^{2 } - 6y + 1}}}\checkmark$

(x + 3) . (x - 3)

$\sf{ {x}^{2} - {3}^{2} }$

$\sf{ {x}^{2} - 9}$

(y^(2) + 4x) . (y^(2) - 4x)

$\sf{( {y}^{2}) {}^{2} - (4x) {}^{2} }$

$\sf{ {y}^{4} } - (4x) {}^{2}$

$\rightarrow\boxed{\boxed{\sf{ {y}^{4} - 16 {x}^{2} }}}\checkmark$

Explicação passo-a-passo:

(espero ter colaborado)