Question

Anyone please solve this​

Answer 1

⭐Solution⭐

✏given here

a+b+c = 7......(1)

And,

ab+bc+ca= 20.....(2)

✒Finf here

a²+b²+c²= ❓

We know,

(a+b+c)²= (a²+b²+c²)+3(ab+bc+ca)

keep value by (1) and (2)

(7)² = (a²+b²+c²)+3(20)

=> (a²+b²+c²)= 49-60

=> (a²+b²+c²)= - 29

✏Hopes its helps u.

Answer 2

Hi mate here is the answer:--✍️✍️✍️

see the attachment ✔️

Hope it helps you ❣️☑️☑️