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abruzzese [7]
3 years ago
5

I need the answer plz​

Mathematics
2 answers:
egoroff_w [7]3 years ago
8 0

Answer:

I can't solve and show it but only tell a method to do it!

So find the zero of the given factor:

i.e.

(x + 1) \\ x =  - 1

Now put its value (-1) in the polynomial

{x}^{3}  - 13 {x}^{2}  + 32x - 20

Now if the answer comes zero it is a factor.

You'll get your answer!

Natalka [10]3 years ago
6 0

Answer:

see explanation

Step-by-step explanation:

If (x - 1) is a factor then f(1) = 0

Given

f(x) = x³ - 13x² + 32x - 20 , then

f(1) = 1³ - 13(1)² + 32(1) - 20

     = 1 - 13 + 32 - 20

     = 0

Since f(1) = 0 then (x - 1) is a factor

Using Synthetic division

 1  | 1  - 13   32   - 20

      ↓    1   - 12      20    

     -----------------------------

      1    - 12   20     0 ← remainder

quotient = x² - 12x + 20 = (x - 2)(x - 10)

Then

x³ - 13x² + 32x - 20 = (x - 1)(x - 2)(x - 10) ← in factored form

     

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Read 2 more answers
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