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 :

abx − 15abx − 10abx + 32abx

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

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 : 6a + 3 from a³ − 3a² + 4a + 1

Subtract : a²+ ab + b² from 4a² − 3ab + 2b²

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 ?

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