The addition of – 7b and 2b is ____________

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The addition of – 7b and 2b is – 5b

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Chapter 3: Algebra - Exercise 3.2 [Page 63]

Chapter 3 Algebra
Exercise 3.2 | Q 1. (i) | Page 63

Add the following:

2p²q² − 3pq + 4, 5 + 7pq − 3p²q²

Add the following:

l² + m², m² + n², n² + l², 2lm + 2mn + 2nl

Simplify combining like terms: 3a - 2b - ab - (a - b + ab) + 3ab + b - a

Add: 3p²q² - 4pq + 5, - 10p²q², 15 + 9pq + 7p²q²

Add: x² - y² - 1 , y² - 1 - x², 1- x² - y²

Add the following algebraic expression:

\[\frac{3}{2}a - \frac{5}{4}b + \frac{2}{5}c, \frac{2}{3}a - \frac{7}{2}b + \frac{7}{2}c, \frac{5}{3}a + \frac{5}{2}b - \frac{5}{4}c\]

If \[x + \frac{1}{x} = 9,\] find the value of \[x^4 + \frac{1}{x^4} .\]

Find the sum of the following expressions

a + 5b + 7c, 2a + 10b + 9c

The sum of –7pq and 2pq is ______.

Add the following expressions:

`5/8p^4 + 2p^2 + 5/8; 1/8 - 17p + 9/8p^2` and `p^5 - p^3 + 7`