Question

If a +b + c = 5 and ab + bc + ca = 10, then find the value of a²+b²+c²?

Answer 1

Answer:

-5

step by step explanation:

(a+b+c)²=(a²+b²+c²)+2(ab+bc+ca)

(5)²=(a²+b²+c²)+2×10

25=(a²+b²+c²)+20

a²+b²+c²=20-25

a²+b²+c²=-5..

So,the value of a²+b²+c²=-5...

I hope it will be help uh... ❤❤