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

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

Sum

3x³ – 4x² + 5x – 6
– 3x³ + 4x² – 5x + 6
+ – + –
6x³ – 8x² +10x – 12

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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 5.1 | Page 140

Evaluate :

−7x² + 18x² + 3x²− 5x²

Evaluate :

7x − 9y + 3 − 3x − 5y + 8

Add : a − 3b + 3; 2a + 5 − 3c; 6c − 15 + 6b

Subtract : cab − 4cad − cbd from 3abc + 5bcd − cda

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

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

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

The two adjacent sides of a rectangle are 2x² – 5xy + 3z² and 4xy – x² – z². Find its perimeter.

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

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