Question

(x² + y² - 3xy ) - (y² - 4xy - 3x²)​

Answer 1

Answer:

this is the correct answer.

Answer 2

Answer:

$\sf \implies 4x^2 + xy$

Step-by-step explanation:

let us open the brackets.

$\bf \imples (x^2 + y^2 - 3xy ) - (y^2 - 4xy - 3x^2)$

$\implies \sf x^2 +y^2-3xy-y^2+4xy+3x^2$

now, let's bring common terms together.

$\implies \sf (x^2+3x^2)+(y^2-y^2)(-3xy+4xy)$

let's simplify them now.

$\sf \implies 4x^2 + xy$