Question

a²+b²+c² = what is the formula??​

Answer 1

Answer:

a² + b² + c² = ( a + b + c )² - 2 ( ab + bc + ca)

Step-by-step explanation:

Hey there!

We know that,

( a + b + c) ² = a² + b² + c² + 2ab+ 2bc + 2ca

So,

a² + b² + c² = ( a + b + c )² - 2 ( ab + bc + ca)

JAI SHREE KRISHNA

Answer 2

Answer:

a2+b2+c2=a2+b2+c2 -2ab - 2bc + 2ca