Question

Evaluate :
i) (999)²-(8)²​

Answer 1

Answer:

999,665

Step-by-step explanation:

(999)^2-(8)^2

(1000-1)^2-(10-2)^2

(a-b)^2=a^2-2ab+b^2

1000^2-2(1000)(1)+1^2-10^2-2(10)(2)+2^2

1000000-2000+1-100-40+4= 999,665

Answer 2

Answer:

999^2

(1000-1)^2

using identity,(a-b)^2=(100×1)

1000000+1-2000

1000001-2000

998001ans.

Step-by-step explanation:

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