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Evaluate Using the Expansion of (A + B)2 Or (A – B)2 : (188)2 - Mathematics

Sum

Evaluate using the expansion of (a + b)2 or (a – b)2 :
(188)2

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Solution

(188)2 = (200 − 12)

= (200)2 + (12)2 − 2(200) (12)

= 40000 + 144 − 4800

= 40144 − 4800

= 35344

Concept: Expansion Form of Numbers
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APPEARS IN

Selina Concise Mathematics Class 8 ICSE
Chapter 12 Identities
Exercise 12 (B) | Q 3.4 | Page 152
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