Question

a^2+b^2+c^2=50
and ab+bc+ca=47
find the value of
a+b+c​

Answer 1

Step-by-step explanation:

⭐Solution ⭐

➡Given here

a²+b²+c²=50.....(1)

ab+bc+ca= 47....(2)

find here

(a+b+c)=❓

Now,

we know,

(a+b+c)²= a²+b²+c²+2(ab+bc+ca)

keep value ,

(a+b+c)²= (50)+2(47)

= 50+94

= 144

so,

(a+b+c)= ±√(144)

= ±12

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