Add : 8x − 3y + 7z, −4x + 5y − 4z, −X − Y − 2z - Mathematics

Add : 8x − 3y + 7z, −4x + 5y − 4z, −x − y − 2z

Sum

8x − 3y + 7z
−4x + 5y − 4z
−x − y − 2z
3x + y + z

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Combining like Terms

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Chapter 11: Algebraic Expressions - Exercise 11 (B) [Page 140]

Chapter 11 Algebraic Expressions
Exercise 11 (B) | Q 2.2 | Page 140

Evaluate :

3x² + 5xy − 4y² + x² − 8xy − 5y²

Add : 3b − 7c + 10, 5c − 2b − 15, 15 + 12c + b

Add : 13ab − 9cd − xy, 5xy, 15cd − 7ab, 6xy − 3cd

Add : x³ − x²y + 5xy² + y³, - x³ − 9xy² + y³, 3x²y + 9xy²

Find the total savings of a boy who saves ₹ (4x – 6y), ₹ (6x + 2y), ₹ (4y – x) and ₹ (y – 2x) for four consecutive weeks.

Subtract : −2x²y + 3xy²from 8x²y

Take away – 3x³ + 4x² – 5x+ 6 from 3x³ – 4x² + 5x – 6

The sides of a triangle are x² – 3xy + 8, 4x² + 5xy – 3 and 6 – 3x² + 4xy. Find its perimeter.

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

How much bigger is 5x²y² – 18xy² – 10x²y than –5x² + 6x²y – 7xy?