Question

Evaluate: (6m-7m)^2 + (6m+7m)^2​

Answer 1

Answer:

=(6m-7m)² + (6m+7m)²

= (36m² + 49m² - 2*6m*7m) + (36m² + 49m² + 2*6m*7m)

= 36m² + 49m² - 84m² + 36m² + 49m² + 84 m²

= 170m²

Therefore,

(6m-7m)² + (6m+7m)² = 170m²

Hope it helps!