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) | Q 5.1 | Page 140

Evaluate :

abx − 15abx − 10abx + 32abx

Evaluate :

7x − 9y + 3 − 3x − 5y + 8

Evaluate :

3x² + 5xy − 4y² + x² − 8xy − 5y²

Find the total savings of a boy who saves ₹ (4x – 6y), ₹ (6x + 2y), ₹ (4y – x) and ₹ (y – 2x) for four consecutive weeks.

Subtract : 4xy² from 3xy²

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

Subtract the sum of 5y² + y – 3 and y² – 3y + 7 from 6y² + y – 2.

If x = 6a + 8b + 9c ; y = 2b – 3a – 6c and z = c – b + 3a ; find :

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.