Question

(999 whole square minus)1​

Answer 1

I think that is the 998000

hope it help you

Answer 2

Answer:

998000

Step-by-step explanation:

{(999)²-1}

x²-y² = (x+y)(x-y)

(999)²-(1)² = (999+1)(999-1)

                = 1000 × 998

                = 998000

Hope this helps!