Question

answer please arrgent

Answer 1

(a+b+c)² = a²+b²+c²+2ab+2bc+2ca

(a+b+c)² = a²+b²+c²+2(a+b+c)

(a+b+c)² = 250 +2(3)

(a+b+c)² = 250+6

(a+b+c)² = 256

a+b+c = √256

a+b+c = 16

Answer 2

i hope it will be helpful to you ... thank you