How Much Less 2a2 + 1 is than 3a2 – 6 ?

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

Sum

3a² – 6
+ 2a² + 1
– –
a² – 7

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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 8.2 | Page 140

Evaluate :

−7x² + 18x² + 3x²− 5x²

Evaluate :

3x² + 5xy − 4y² + x² − 8xy − 5y²

Add : x³ − x²y + 5xy² + y³, - x³ − 9xy² + y³, 3x²y + 9xy²

Subtract : 4xy² from 3xy²

Subtract : −2x²y + 3xy²from 8x²y

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

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

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

What must be subtracted from 19x⁴ + 2x³ + 30x – 37 to get 8x⁴ + 22x³ – 7x – 60 ?

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