Take M2 + M + 4 from −M2 + 3m + 6 and the Result from M2 + M + 1. - Mathematics

Take m² + m + 4 from −m² + 3m + 6 and the result from m² + m + 1.

Sum

− m² + 3m + 6
+ m² + m + 4
− − −
− 2m²+ 2m + 2
A.T.Q. m² + m + 1
− 2m² + 2m + 2
+ − −
3m² − m − 1

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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 5.2 | Page 140

Evaluate :

abx − 15abx − 10abx + 32abx

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7x − 9y + 3 − 3x − 5y + 8

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Add : 13ab − 9cd − xy, 5xy, 15cd − 7ab, 6xy − 3cd

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

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 perimeter of a triangle is 8y² – 9y + 4 and its two sides are 3y² – 5y and 4y² + 12. Find its third side.

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