Question

if a+b =8,b+c=10,c+a=12 find a^2+b^2+c^2​

Answer 1

Answer:

83

Step-by-step explanation:

( note : you can take any value of a . I am taking 5 )

so let a equals to 5

a + b = 8

b = 8 - 5

b = 3

now put the value in second equation (b + c = 10)

3 + c = 10

c = 10-3

c = 7

for checking that c + a = 12 put the value of c and a

(c=7 anda=5)

7+5=12

now we know all the value of a , b and c so put in the equation which is a^2+ b^2+c^2

a=5

b=3

c=7

= 5^2 + 3^2 + 7^2

= 25+9+49

=83