Question

Which of the following statements about the work shown below is true?

Answer 1

Answer:

B). The distributive property was not applied correctly in the second step.

Step-by-step explanation:

We need to find the correct option for marking error from given choices:

$\left(x^2+2x+6\right)\left(2x^2-4x-1\right)$

Step 1:

$x^2\left(2x^2-4x-1\right)+2x\left(2x^2-4x-1\right)+6\left(2x^2-4x-1\right)$

No error.

Step 2:

If you apply distributive property correctly then 2nd term gives:

$2x\left(2x^2-4x-1\right)=4x^3-8x^2-2x$

While 2nd term is not like that.

Hence final answer is :

B). The distributive property was not applied correctly in the second step.