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

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

Sum

The required result,
(5x²y² – 18xy² – 10x²y) – (–5x² + 6x²y – 7xy)

= 5x²y² – 18xy² – 10x²y + 5x² + 6x²y – 7xy

= 5x²y² – 18xy² – 16x²y + 5x² + 7xy

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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 15 | Page 140

Evaluate :

−7x² + 18x² + 3x²− 5x²

Evaluate :

7x − 9y + 3 − 3x − 5y + 8

Evaluate :

3x² + 5xy − 4y² + x² − 8xy − 5y²

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 : 4xy² from 3xy²

Subtract : 3a − 5b + c + 2d from 7a − 3b + c − 2d

Subtract : x³ − 4x − 1 from 3x³ − x² + 6

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

How much smaller is 15x – 18y + 19z than 22x – 20y – 13z + 26 ?