Question

add x^2 - y^2-1,2y^2-3x^2-3,4x^2-2y^2+9​

Answer 1

Step-by-step explanation:

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R.D. Sharma Solutions»R.D. Sharma Class 7 Solutions»Chapter 7 Algebraic Expressions»Algebraic Expressions Exercise 7.2

Chapter 7: Algebraic Expressions Exercise – 7.2

Question: 1

Add the following:

(i) 3x and 7x

(ii) -5xy and 9xy

Solution:

We have

(i) 3x + 7x = (3 + 7) x = 10x

(ii) -5xy + 9xy = (-5 + 9)xy = 4xy

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Answer 2

Step-by-step explanation:

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