3 years ago

What is the error in the student work below?

Mathematics

2 answers:

sp2606 [1]3 years ago

8 0

The negative 16 in the second line should be positive 16.

See attached picture:

ivann1987 [24]3 years ago

5 0

Answer:

This is +16x not minus 16x as shown in the problem

Step-by-step explanation:

4x^3 + 4x^2 -8x-(8x^2 -16x+4)

Distribute the minus sign

4x^3 + 4x^2 -8x-8x^2 +16x-4

The error is here This is +16x not minus 16x as shown in the problem

4x^3 -4x^2 +8x-4

You might be interested in

A dog buried 18 bones in his backyard. On Monday, he dug up 1/2 of his bones. On Tuesday, he dug up another 1/3 of his bones. Ho

Korolek [52]

Answer:

Step-by-step explanation:

A dog buried 18 bones

On Monday he dug up 1/2 of the bones

On Tuesday he dug up 1/3 of the bones

= 1/2 × 18

= 9

= 1/3×18

= 6

Therefore the remaining bones still buried in the ground can be calculated as follows

= 9+6

= 15

= 18-15

= 3

Hence 3 bones are still buried in the ground

5 0

3 years ago

Ashley needed to get her computer fixed. She took it to the repair store. The

quester [9]

The awnser will be mother russia

7 0

3 years ago

Need help pleaseeeeee??

Oksi-84 [34.3K]

She should have subtracted 6x from both sides to get -10x+11=1

8 0

3 years ago

Write an equation that represents this comparison sentence. 32is 8 times as many as 4

12345 [234]

32 = 8 x 4 or 32 = 4 x 8

8 0

4 years ago

Read 2 more answers

Johnny stated "All prime numbers are odd." Charlene responded, "I can demonstrate that your statement is false."

mario62 [17]

$\text{Hello There!}$

$\bf\text{All prime numbers are ultimately odd besides 2 because it is a factor.}$

$\text{Therefore, he would be close, but incorrect at some extent.}$

$\bold{So\;D\;would\;be\;your\;answer.}$

$\huge\text{I hope this helped! (:}$

$\rule{250}{1.5}$

6 0

3 years ago