Question

Using the identity for diffrence of two squares , find the value of : Q (84)²-(76)²

Answer 1

Answer:

(a)² - (b)² = a² + b² - 2ab

Step-by-step explanation:

(a)² - (b)² = a² + b² - 2ab

(84)² - ( 76)²

(84 × 84 ) - (76×76)

7056 - 5776

1280. it is our answer