Use the Product (A + B) (A – B) = A2 – B2 to Evaluate: 33 X 27 - Mathematics

Use the product (a + b) (a – b) = a² – b² to evaluate:
33 x 27

Sum

33 x 27 = (30+3) (30−3)

= (30)² − (3)²

= 900 − 9

= 891

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Product of Sum and Difference of Two Terms

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Chapter 12: Identities - Exercise 12 (A) [Page 150]

Chapter 12 Identities
Exercise 12 (A) | Q 4.2 | Page 150

Evaluate : (a+1) (a-1) (a²+1)

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Evaluate : (3x−4y) (3x+4y) (9x²+16y²)

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Evaluate: (3x + 4y) (3x − 4y) (9x² + 16y²)