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

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 :

b²y − 9b²y + 2b²y − 5b²y

Evaluate :

3x² + 5xy − 4y² + x² − 8xy − 5y²

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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 : −2x²y + 3xy²from 8x²y

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