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Evaluate: Xz (X2 + Y2) for X = 2, Y = 1 and Z= 1. - Mathematics

Sum

Evaluate: xz (x2 + y2) for x = 2, y = 1 and z= 1.

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Solution

For x = 2, y = 1 and z = 1

xz (x2 + y2)

2(1) × (22 + 12)

2 × (4 + 1) 

2 × 5 

= 10

Concept: Multiplying a Polynomial by a Polynomial
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APPEARS IN

Selina Concise Mathematics Class 8 ICSE
Chapter 11 Algebraic Expressions
Exercise 11 (C) | Q 11.3 | Page 143
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