Chapter 5: Q. 9 (page 497)

In the following exercises, add or subtract the monomials.
$\begin{array}{l} (a) 7 x^{2} + 5 x^{2} \\ (b) 4 a - 9 a \end{array}$

Short Answer

Expert verified

The result of solving is

$\begin{array}{l} a) 12 x^{2} \\ b) - 5 a \end{array}$

Step by step solution

Step 1. Given information

$\begin{array}{l} Thegivenexpressionsare \\ (a) 7 x^{2} + 5 x^{2} \\ (b) 4 a - 9 a \\ Wehavetoaddorsubtractthegivenexpressionsasapplicable. \end{array}$

Step 2. Solve for part (a)

$\begin{array}{l} Considerthegivenexpression \\ \Rightarrow 7 x^{2} + 5 x^{2} = (7 + 5) x^{2} \\ = 12 x^{2} \end{array}$

Step 3. Solve for part (b)

$\begin{array}{l} Considerthegivenexpression \\ \Rightarrow 4 a - 9 a = (4 - 9) a \\ = - 5 a \end{array}$

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In the following exercises, add or subtract the monomials.
$\begin{array}{l} (a) 7 x^{2} + 5 x^{2} \\ (b) 4 a - 9 a \end{array}$

Short Answer

Step by step solution

Step 1. Given information

Step 2. Solve for part (a)

Step 3. Solve for part (b)

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In the following exercises, add or subtract the monomials.(a)7x2+5x2(b)4a−9a

Short Answer

Step by step solution

Step 1. Given information

Step 2. Solve for part (a)

Step 3. Solve for part (b)

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Math Textbooks

Logic and Functions

Discrete Mathematics

Mechanics Maths

Decision Maths

Geometry

Statistics

Study anywhere. Anytime. Across all devices.

In the following exercises, add or subtract the monomials.
$\begin{array}{l} (a) 7 x^{2} + 5 x^{2} \\ (b) 4 a - 9 a \end{array}$