Question

evaluate (998)² - 4
​

Answer 1

Answer:

${998}^{2} - 4 \\ = {998}^{2} - {2}^{2} \\ = (998 - 2)(998 + 2) \\ = 996 \times 1000 \\ = 996000$

hope you get your answer

Answer 2

Answer:

(998)² - 4 = 996000

Step-by-step explanation:

(998)² - 4 = (998)² - (2)²

                = (998 + 2) (998 - 2) ............Reason: a² - b² = (a+b)(a-b)

                 = (1000)(996)

                 = 996000