Chapter 7: Q 122. (page 833)

In the following exercises, factor each expression.
$z^{2} - 3 z + 28$

Short Answer

Expert verified

The expression, $z^{2} - 3 z + 28$ is a prime.

Step by step solution

Step 1. Given information

Given expression is $z^{2} - 3 z + 28$ .

Step 2. Find the last terms of the binomials

Write the factors as two binomials with the first terms $z$ .

$(z) (z)$

Find two numbers that multiply to $28$ and add to $- 3$ .

Factors of 28	Sum of factors
-1, -28	-1 + (-28) = -29
-2, -14	-2 + (-14) = -16
-4, -7	-4 + (-7) = -11

Step 3. Factorization

As shown in the table, none of the factors add to $28$ ; therefore, the expression is prime.

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In the following exercises, factor each expression.
$z^{2} - 3 z + 28$

Short Answer

Step by step solution

Step 1. Given information

Step 2. Find the last terms of the binomials

Step 3. Factorization

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In the following exercises, factor each expression. z2-3z+28

Short Answer

Step by step solution

Step 1. Given information

Step 2. Find the last terms of the binomials

Step 3. Factorization

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Math Textbooks

Calculus

Logic and Functions

Decision Maths

Theoretical and Mathematical Physics

Probability and Statistics

Discrete Mathematics

Study anywhere. Anytime. Across all devices.

In the following exercises, factor each expression.
$z^{2} - 3 z + 28$