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Chapter 7: Q32. (page 351)

If px=3x2-2x+5andrx=x3+x+1 then find pa2.

Short Answer

Expert verified

The value of pa2=3a4-2a2+5.

Step by step solution

01

Step 1. Write down the given information.

The given functions are px=3x2-2x+5andrx=x3+x+1.

02

Step 2. Calculation.

Evaluating pa2 by plugging x=a2 in given function px=3x2-2x+5.

px=3x2鈭�2x+5....Givenpa2=3a22鈭�2a2+5=3a4鈭�2a2+5

03

Step 3. Conclusion.

The value of pa2=3a4-2a2+5.

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Most popular questions from this chapter

Graph the function y=12x2+x+32.

BUSINESS

Becca is writing a computer program to find the salaries of her

employees after their annual raise. The percent of increase is represented by p.

Marty鈥檚 salary is $23,450now. Write a polynomial to represent Marty鈥檚 salary

after one year and another to represent Marty鈥檚 salary after three years. Assume

that the rate of increase will be the same for each of the three years.

For each graph,

a. Describe the end behaviour.

b. Determine whether it represents an odd-degree or an even-degree polynomial function, and

c. state the number of real zeros.

For each graph,

a. Describe the end behaviour.

b. Determine whether it represents an odd-degree or an even-degree polynomial function, and

c. state the number of real zeros.

Find p4andp-2 for the function px=2-x.
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