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

shaalaa.com

Combining like Terms

Is there an error in this question or solution?

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

Chapter 11 Algebraic Expressions
Exercise 11 (B) | Q 15 | Page 140

Add : 5a + 3b, a − 2b, 3a + 5b

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

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

Subtract : 4xy² from 3xy²

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

Subtract the sum of 5y² + y – 3 and y² – 3y + 7 from 6y² + y – 2.

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.

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