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

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 :

b²y − 9b²y + 2b²y − 5b²y

Evaluate :

7x − 9y + 3 − 3x − 5y + 8

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3x² + 5xy − 4y² + x² − 8xy − 5y²

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

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

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How much less 2a² + 1 is than 3a² – 6 ?

The perimeter of a triangle is 8y² – 9y + 4 and its two sides are 3y² – 5y and 4y² + 12. Find its third side.

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