Unit 5 Lesson 2 Cumulative Practice Problems\ What is the value of

4(x-2)(x-3)+7(x-2)(x-5)-6(x-3)(x-5)

when

x=

5 ?\ Which polynomial function has zeros when

x=-2,(3)/(4),5

?\ a.

f(x)=(x-2)(3x+4)(x+5)

\ b.

,f(x)=(x-2)(4x+3)(x+5)

\ c.

,f(x)=(x+2)(3x-4)(x+5)

\ d.

f(x)=(x+2)(4x-3)(x-5)

\ The graph of a polynomial

f(x)=(2x-3)(x-4)(x+3)

has

x

-intercepts at

3x

values. What are they?\ Han is multiplying

10x^(4)

by

0.5x^(3)

and gets

5x^(7)

. He says that

0.5x^(3)

is not a polynomial because 0.5 is not an integer. What is the error in Han's thinking? Explain your reasoning.\ Here are two expressions whose sum is a new expression,

A

.\

(2x^(2)+5)+(6x-7)=A

\ Select all the values that we can put in the box so that

A

is a polynomial.\ a. -2\ b. -1\ c.

,-0.5

\ d. 0\ e. 0.5\ f. 1\ g. 2

Unit 5 Lesson 2 Cumulative Practice Problems 1. What is the value of 4(x2)(x3)+7(x2)(x5)6(x3)(x5) when x= 5 ? 2. Which polynomial function has zeros when x=2,43,5 ? a. f(x)=(x2)(3x+4)(x+5) b. f(x)=(x2)(4x+3)(x+5) c. f(x)=(x+2)(3x4)(x+5) d. f(x)=(x+2)(4x3)(x5) 3. The graph of a polynomial f(x)=(2x3)(x4)(x+3) has x-intercepts at 3x values. What are they? 4. Han is multiplying 10x4 by 0.5x3 and gets 5x7. He says that 0.5x3 is not a polynomial because 0.5 is not an integer. What is the error in Han's thinking? Explain your reasoning. 5. Here are two expressions whose sum is a new expression, A. (2x2+5)+(6x7)=A Select all the values that we can put in the box so that A is a polynomial. a. -2 b. -1 C. 0.5 d. 0 e. 0.5 f. 1 g. 2