Question

Help plz!
Will mark u as brainlist if the answer is right!

Answer 1

Answer:

ans is above

Step-by-step explanation:

i have given you correct ans

Answer 2

(a+b+c)^2= a^2+b^2+c^2+2(ab+bc+ca)

(12)^2= a^2+b^2+c^2+2(22)

144-44=a^2+b^2+c^2+

100=a^2+b^2+c^2+