Question

what is the answer of (x+y)(x-y)

Answer 1

$(x+y)(x-y)=x\times x-x\times y+y\times x-y\times y\\\\=x^2-xy+xy-y^2=x^2-y^2\\\\Answer:(x+y)(x-y)=x^2-y^2$

Answer 2

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

Given :

The expression (x + y)(x - y)

To find :

The value of the expression

Solution :

Step 1 of 2 :

Write down the given expression

The given expression is

(x + y)(x - y)

Step 2 of 2 :

Find the value of the expression

$\sf (x + y)(x - y)$

$\sf = x (x - y) + y(x - y)$

$\sf = {x}^{2} - xy + xy - {y}^{2}$

$\sf = {x}^{2} - {y}^{2}$

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