Use the Product (A + B) (A – B) = A2 – B2 to Evaluate: 4.6 X 5.4 - Mathematics

Use the product (a + b) (a – b) = a² – b² to evaluate:
4.6 x 5.4

Sum

4.6 x 5.4 = (5−0.4) (5+0.4)

= (5)²− (0.4)²

= 25 − 0.16

= 24.84

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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 4.6 | Page 150

Evaluate : (a+1) (a-1) (a²+1)

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

Use the product (a + b) (a – b) = a² – b² to evaluate:
103 x 97

Use the product (a + b) (a – b) = a² – b² to evaluate:
9.8 x 10.2

Use the product (a + b) (a – b) = a² – b² to evaluate:
7.7 x 8.3

Evaluate: (6 – xy) (6 + xy)

Evaluate : (2a − 3b) (3a + 4b)

Evaluate: (a² + 5) (a² − 3)

Evaluate: (4x² − 5y²) (4x² + 5y²)

Evaluate: (m + 3) (m − 3) (m² + 9)