Add: −9y, 11y, 2y

Add: −9y, 11y, 2y

Sum

−9y + 11y + 2y = (−9 + 11 + 2)y

= (2 + 2)y

= 4y

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Chapter 3: Algebra - Exercise 3.2 [Page 63]

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

Simplify combining like terms: (3y² + 5y - 4) - (8y - y² - 4)

Subtract: -x² + 10x - 5 from 5x - 10

What should be subtracted from 2a + 8b + 10 to get - 3a + 7b + 16?

Subtract:

\[x^2 y - \frac{4}{5}x y^2 + \frac{4}{3}xy \text { from } \frac{2}{3} x^2 y + \frac{3}{2}x y^2 - \frac{1}{3}xy\]

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 addition of 3mn, – 5mn, 8mn and – 4mn is

Add:

2p⁴ – 3p³ + p² – 5p + 7, –3p⁴ – 7p³ – 3p² – p – 12

Sum of x and y is x + y.

Add the following expressions:

uv – vw, vw – wu and wu – uv