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Using Identities, Evaluate 297 × 303 - Mathematics

Using identities, evaluate 297 × 303

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Solution

297 × 303 = (300 − 3) × (300 + 3)

= (300)2 − (3)2 [(a + b) (a − b) = a2 − b2]

= 90000 − 9 = 89991

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APPEARS IN

NCERT Class 8 Maths Textbook
Chapter 9 Algebraic Expressions and Identities
Exercise 9.5 | Q 6.6 | Page 152
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