Evaluate, Using (A + B)(A - B)= A2 - B2. 999 X 1001

Evaluate, using (a + b)(a - b)= a² - b².
999 x 1001

बेरीज

999 x 1001
= (1000 - 1) x (1000 + 1)
= (1000)² - (1)²
= 1000000 - 1
= 999999.

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पाठ 4: Expansions - Exercise 4.1

पाठ 4 Expansions
Exercise 4.1 | Q 6.2

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