3 years ago

Josie simplified an expression as shown below. In which step did Josie make mistake(s)?

Mathematics

1 answer:

Andreas93 [3]3 years ago

6 0

Answer:

D. Step 1 only.

Step-by-step explanation:

Here, Josie didn't use the distributive property correctly. The other two steps are still right, so D is correct.

How it should have been done:

x + 3 + 7x(x - 5)

<em>Use the distributive property to multiply 7x by x - 5.</em>

x + 3 + 7x² - 35x (The boldened part is what should have happened for Step 1)

<em>Combine x and -35x to get -34x.</em>

7x² - 34x - 3 is what the earlier equation should be simplified to.

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