Polynomials Error Analysis

Error Analysis: Describe and Correct the Error in Finding the Product of the Binomials.

• The variable t should be multiplied by t.

• The variable t should be multiplied by t + 5.

• The expression t+5 should be multiplied by 2. 

• The integer -2 should be multiplied only by 5. 

Tags

CCSS.HSA.APR.A.1

The leading term is​ (a)   . The leading coefficient is​ (b)   . The degree of the polynomial is ​ (c)   . The constant in this polynomial is ​ (d)   . This expression is classified as a ​ (e)   .

• 1

• 5

• -4

• quintic polynomial

• 9

• 2

• -8

• quartic polynomial

• 7

5 + 2(n + 1) = 2n
Bill says the first step is to add and get
7(n + 1) = 2n

• Bill is correct

• Bill is wrong; he should have distributed the 2 first.

• Bill is wrong; he should have subtracted 5 from both sides first.

• Bill is wrong; he should have divided by 2 firat.

Tags

CCSS.8.EE.C.7B

Find the error in the problem below
19 - 2k = 3k - 1
     +3k   +3k
19 + 1k = -1
-19           -19
k = -20

• They should have divided by 1 for the last step

• They should add 19 instead of subtracting 19

• I can not find an error

• Instead of adding 3k they should subtract 3k

Tags

CCSS.HSA.REI.A.1

Is there a mistake on the equation solved? If so where was the mistake made?

• This equation is solved correctly.

• The mistake was made on the first step of combining like terms on the left side.

• The mistake was made on the second step of moving the variable to the left side.

• The mistake was made on the third step of moving the constant to the right side.

• The mistake was made on the last step when isolating the variable by removing the coefficient

Tags

CCSS.HSA.REI.A.1

Is there a mistake on the equation solved? If so where was the mistake made?

• This equation is solved correctly.

• The mistake was made on the second step of combining like terms on the left side.

• The mistake was made on the third step of moving the variable to the right side.

• The mistake was made on the fourth step of moving the constant to the left side.

• The mistake was made on the first step doing the distributive property.

Is there a mistake on the equation solved? If so where was the mistake made?

• This equation is solved correctly.

• The mistake was made on the second step of combining like terms on the right side.

• The mistake was made on the third step of moving the variable to the left side.

• The mistake was made on the fourth step of moving the constant to the right side.

• The mistake was made on the first step doing the distributive property.

Is there a mistake on the equation solved? If so where was the mistake made?

• This equation is solved correctly.

• The mistake was made on the second step doing the distributive property on the right side.

• The mistake was made on the third step of moving the variables.

• The mistake was made on the fourth step of determining true/false statement as infinite vs no solution.

• The mistake was made on the first step doing the distributive property on the left side.

Is there a mistake on the equation solved? If so where was the mistake made?

• This equation is solved correctly.

• The mistake was made on the first step of doing the distributive property.

• The mistake was made on the second step of moving the variable.

Tags

CCSS.8.EE.C.7A

Is there a mistake on the equation solved? If so where was the mistake made?

• This equation is solved correctly.

• The mistake was made on the distributive property steps.

• The mistake was made on combining like terms on the left side.

• The mistake was made on moving the variable to the right side.

• The mistake was made on moving the constant to the left side.

Tags

CCSS.HSA.REI.A.1