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

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Sum

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

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Solution

4.6 x 5.4 = (5−0.4) (5+0.4)

= (5)2 − (0.4)2

= 25 − 0.16

= 24.84

Concept: Product of Sum and Difference of Two Terms
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APPEARS IN

Selina Concise Mathematics Class 8 ICSE
Chapter 12 Identities
Exercise 12 (A) | Q 4.6 | Page 150
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