Question

(7m-8n)² + (7m+8n)²

please answer with explanation
I know only this much
a²-2ab+b²+(a²+2ab+b²)
= 7m²-2(7m×8n)+8n² + (7m²+2(7m×8n)+8²
= 49 m² - 112mn+64n²+(49m²+112mn+64²)
= ?????????

After this answer with explanation how the next answer Will come

don't scam I will report if you scam​

Answer 1

Answer:

Simplify (7m-8n)² +(7m+8n)² Get the answers you need, now! ... (a-b)² = a² - 2ab + b² ", we'll apply these two identities and ... ( 49m² - 112mn + 64n² ) + ( 49m² + 112mn + 64n² ) .

Answer 2

Answer:

Try to solve this problem by using the rule 2(a² + b²). It will be more easy and helpful.