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Chapter 7: Q 7.26. (page 816)

Factor:-7a2+21a.

Short Answer

Expert verified

The required factor is-7aa-3.

Step by step solution

01

Step 1. Given information.

The given polynomial is:

-7a2+21a

02

Step 2. Find the GCF.

Find the GCF of 7a2and21a,

7a2=7路a路a21a=3路7路a

GCF=7a

Since the leading coefficient is negative, the GCF is negative, -7a.

03

Step 3. Find the factor.

Rewrite each term as a product using the GCF,

-7a路a--7a路3

Factor the GCF,

-7aa-3

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Most popular questions from this chapter

Factor Differences of Squares

In the following exercises, factor.

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Of all the factoring methods covered in this chapter (GCF, grouping, undo FOIL, 鈥榓c鈥� method, special products) which is the easiest for you? Which is the hardest? Explain your answers.

Factor by grouping

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Solve: (x鈭�3)(x+5)=0.

Factor:9xy2+6x2y2+21y3
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