Question

Simplify-(3x-4x)(x+y)+(y-x)(3x+4y)​

Answer 1

Answer:

Mark me as a Brainlist.

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

is the correct answer .

Step-by-step explanation:

Simplify-(3x-4x)(x+y)+(y-x)(3x+4y)

given :(3x-4x)(x+y)+(y-x)(3x+4y)

solving :

$(3x - 4x)(x + y) \\ + \\ (y - x)(3x + 4y) \\ = multiply \: the \: expressions \\ we \: get \\ 3 {x}^{2} + 3xy - 4 {x}^{2} - 4xy + 3xy \\ + 4 {y}^{2} - 3 {x}^{2} - 4xy = \\ cancell \: the \: common \: terms$

$we \: get \\ - 4 {x}^{2} + 4 {y}^{2} = 2xy$