Question

simplify using identity : (x+y) (x-y) +(y+z)(y-z) +(z+x)(z-x) ​

Answer 1

Answer:

vvgy

Step-by-step explanation:

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Answer 2

(x^2 - y^2)+(y^2 - z^2)+(z^2 - x^2)

= x^2 - y^2+y^2 - z^2+z^2 - x^2

= 0

Step-by-step explanation:

Here we used the formula (a+b) (a-b) = a^2 - b^2