Question

1. (x+3y+31z)^2
2. x^2+21x+104
3. (x+3)^2-(x-3)^2
4. x^2+25+150
5. x^2-2.25y^2
6. (x-10)^2+(x+10)^2

solve the following using suitable identities ​

Answer 1

Answer:

please mark as brainlist

Answer 2

$\huge\mathrm\purple{Answer}$

Hope it's help..