Question

anelle expanded the expression as shown below.

Negative 4 (negative 3 x + StartFraction 2 over 7 EndFraction) = negative 12 x minus 3 and StartFraction 5 over 7 EndFraction

What errors did she make? Select three options.
The first term should be positive.
The second term should be positive.
She did not distribute the Negative 4 properly.
She added StartFraction 2 over 7 EndFraction to Negative 4 instead of multiplying StartFraction 2 over 7 EndFraction by Negative 4.
She did not simplify the expression completely.

Answer 1

Answer:

• She did not distribute the Negative 4 properly.
• She added StartFraction 2 over 7 EndFraction to Negative 4 instead of multiplying StartFraction 2 over 7 EndFraction by Negative 4.
• The first term should be positive

Step-by-step explanation:

Anelle's expansion is given as:

$- 4( - 3x + \frac{2}{7} ) = 12x - 3 \frac{5}{7}$

Let us do our own expansion and compare it to Anelle's expansion.

$- 4( - 3x + \frac{2}{7} ) = - 4 \times - 3x + - 4 \times \frac{2}{7}$

$- 4( - 3x + \frac{2}{7} ) = 12x - \frac{8}{7}$

$- 4( - 3x + \frac{2}{7} ) = 12x - 1\frac{1}{7}$

So we can see that, Anelle did not distribute the -4 properly.

Annelle added negative 4 to the second term instead of multiplying it.

Answer 2

Answer:

A C D

Step-by-step explanation: