प्रश्न 47 यदि a+b+c=0 और ab+bc+ca=5, तो a+b+

1.	प्रश्न 47 यदि a+b+c=0 और ab+bc+ca=5, तो a+b+c' का मान होगा?(alo7L}( 2obo131
Answer» As we knowa3 +b3 + c3 – 3abc = (a+b+c) (a2 + b2 + c2 – ab – bc – ca) Given,a + b + c = 0, ab + bc + ca = 5 Therefore, a3 +b3 + c3 – 3abc = 0* (a2 + b2 + c2 – 5) a3 + b3 + c3 - 3abc = 0 a3 + b3 + c3 = 3abc

प्रश्न 47 यदि a+b+c=0 और ab+bc+ca=5, तो a+b+c' का मान होगा?(alo7L}( 2obo131

Answer»

As we knowa3 +b3 + c3 – 3abc = (a+b+c) (a2 + b2 + c2 – ab – bc – ca)

Given,a + b + c = 0, ab + bc + ca = 5

Therefore, a3 +b3 + c3 – 3abc = 0* (a2 + b2 + c2 – 5)

a3 + b3 + c3 - 3abc = 0

a3 + b3 + c3 = 3abc