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

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

Sum

x³ − x²y + 5xy² + y³−x³ − 9xy² + y³ + 3x²y + 9xy² 2x²y + 5xy² + 2y³

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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 2.6 | Page 140

Evaluate :

−7x² + 18x² + 3x²− 5x²

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 : −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 ?

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 ?