Mathematics, 30.10.2019 20:31 starreee
1. kalena was asked to prove ifx(x - 1)(x + 1) = x3 - x represents a polynomial identity. she
states that this relationship is not true and the work she used to justify her thinking is shown.
step 1: x(x - 1)(x + 1)
step 2: (x2 + x)(x - 1)
step 3: x3 - x2 - x2 - x
step 4: x3 - 2x2 - x
which statement correctly describes kalena's justification?
a. kalena is correct. there are no mistakes in her justification.
b. kalena made a mistake in step 2. the justification should state: (2x - x)(x + 1).
c. kalena made a mistake in step 3. the justification should state: x
- x.
d. kalena made a mistake in step 4. the justification should state: x3 + 2x2 - x
Answers: 1
Mathematics, 21.06.2019 21:30
On #16 : explain how factoring a trinomial, ax^2+ bx+ c, when a does not equal 1 different from factoring a trinomial when a = 1.
Answers: 2
Mathematics, 21.06.2019 22:00
Which word in the sentence below is an interrogative pronoun? who is picking us up from school? whousisfrom
Answers: 1
Mathematics, 21.06.2019 22:00
The birth weights of newborn babies in the unites states follow in a normal distrubution with a mean of 3.4 kg and standard deviation of 0.6 kg. reaserches interested in studying how. children gain weights decide to take random samples of 100 newborn babies and calculate the sample mean birth weights for each sample
Answers: 1
1. kalena was asked to prove ifx(x - 1)(x + 1) = x3 - x represents a polynomial identity. she
...
...
Chemistry, 27.02.2020 17:28
English, 27.02.2020 17:28
English, 27.02.2020 17:28
Law, 27.02.2020 17:28
Mathematics, 27.02.2020 17:28
Mathematics, 27.02.2020 17:28
Mathematics, 27.02.2020 17:28
English, 27.02.2020 17:28
History, 27.02.2020 17:28
Mathematics, 27.02.2020 17:28