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 :

−7x² + 18x² + 3x²− 5x²

Evaluate :

3x² + 5xy − 4y² + x² − 8xy − 5y²

Add : a − 3b + 3; 2a + 5 − 3c; 6c − 15 + 6b

Subtract : −2x²y + 3xy²from 8x²y

Subtract : 6a + 3 from a³ − 3a² + 4a + 1

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

What must be added to x⁴ – x³ + x² + x + 3 to obtain x⁴ + x² – 1 ?

How much more than 2x² + 4xy + 2y² is 5x² + 10xy – y² ?

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.