Question

please help me fast
please

Answer 1

HELLO.....

YOUR ANSWER IS IN THE ATTACHMENT.....

HOPE IT HELPS....

PLEASE MARK BRAINLIEST....

Answer 2

Answer:

115

Step-by-step explanation:      let  a2+b2+c2=x

[a+b+c]2=a2+b2+c2+2{ab+bc+ca}

[13]2=x+54

please mark BRAINLIST

169=x+54

x=115