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The Two Adjacent Sides of a Rectangle Are 2x2 – 5xy + 3z2 and 4xy – X2 – Z2. Find Its Perimeter. - Mathematics

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Sum

The two adjacent sides of a rectangle are 2x2 – 5xy + 3z2 and 4xy – x2 – z2. Find its perimeter.

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Solution

Adjacent sides of a rectangle are 2x2 – 5xy + 3z2 and 4xy – x2 – z2

∴ Perimeter = 2(2x2 – 5xy + 3z2 + 4xy – x2 – z2)

= 4x2 – 10xy + 6z2 + 8xy – 2x2 – 2z2 

= 2x2 – 2xy + 4z2

Concept: Combining like Terms
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APPEARS IN

Selina Concise Mathematics Class 8 ICSE
Chapter 11 Algebraic Expressions
Exercise 11 (B) | Q 12 | Page 140
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