Lesson 5.5 Solving Polynomial Equations

If a solution is repeated 3 times, the graph _________ .

• bounces off the x-axis

• bounces off the y axis

• crosses over the x axis

• never touches the x-axis

If the factored form of a function is $f\left(x\right)=2x\left(x-4\right)\left(x+5\right)$ , then the solutions are: 

• x = 4, x = -5

• x = -4, x = 5

• x = 0, x = 4, x = -5

• x = 2, x = 4, x = -5

Tags

CCSS.HSF-IF.C.7C

Other names for the solutions to a polynomial function are ____________ . Check all that apply.

• roots

• x-intercepts

• zeros

• y-intercepts

Tags

CCSS.HSF-IF.C.7C

True or False: If a polynomial with four terms cannot be factored by grouping ("grouping fail"), then you must use the irrational root theorem to solve.

• True

• False

Solve.

• A

• B

• C

• D

Tags

CCSS.HSA-SSE.B.3B

CCSS.HSF-IF.C.8A

Solve.

• A

• B

• C

• D

Tags

CCSS.HSA-REI.B.4B

Solve.

• A

• B

• C

• D

Tags

CCSS.HSF-IF.C.7C

Solve.

• A

• B

• C

• D

Tags

CCSS.HSA-REI.B.4B

Solve.

• A

• B

• C

• D

Tags

CCSS.HSF-IF.C.7C

Which one of the following is NOT a possible zero of $f\left(x\right)=x^3-8x^2+11x+20$   

• 2

• 4

• -6

• -10