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Find the Square Of X − 2y +1 - Mathematics

Sum

Find the square of  x − 2y +1

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Solution

(x − 2y +1)2 = (x)2 + (−2y)2 + (1)2 + 2 × x × −2y + 2 × (−2y) ×1 + 2 × 1 × x

= x2 + 4y2 + 1 − 4xy − 4y + 2x

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APPEARS IN

Selina Concise Mathematics Class 8 ICSE
Chapter 12 Identities
Exercise 12 (B) | Q 2.05 | Page 152
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