Question

(a^ 2 +b^ 2 )(a^ 2 -b^ 2 )+(b^ 2 +c^ 2 )(b^ 2 -c^ 2 )+(c^ 2 +a^ 2 )(c^ 2 -a^ 2 ) এর মান নির্ণয় করো​

Answer 1

Step-by-step explanation:

(a^ 2 +b^ 2 )(a^ 2 -b^ 2 )+(b^ 2 +c^ 2 )(b^ 2 -c^ 2 )+(c^ 2 +a^ 2 )(c^ 2 -a^ 2 )

={(2a)²-(2b)²}+{(2b)²-(2c)²}+{(2c)²-(2a)²}

=4a²-4b²+4b²-4c²+4c²-4a²

=0