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3 years ago

A student expanded an expression, as shown. Is the student's work correct? Explain why or why not.

Mathematics

2 answers:

Schach [20]3 years ago

7 0

Answer:

No, the work is not correct. The distributive property was not used properly to expand the expression. Negative 6 should be multiplied by both terms in the parentheses. The second product should be -6 times -2/13 to get positive 12/13.

Step-by-step explanation:

Just answered the question. Just copy and paste its the work to work answer

Ugo [173]3 years ago

4 0

Answer:

No.

Step-by-step explanation:

Honestly, I'm not entirely certain. The steps are formatted very weirdly and I'm not sure what they are.

I believe the first step is -6(4x-213) which is a different expression than the last step which is (-24x-1213) but those aren't very similar.

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Step-by-step explanation:

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3 years ago

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4vir4ik [10]

Answer :

$6{y}^{4} {z}^{2} + 12 {y}^{3} {z}^{2}-3 {y}^{3} {z}+3 {y}^{2} {z}^{2}$

Step-by-step explanation :

To find the product of

$3 {y}^{2} z(2 {y}^{2} z + 4yz - y + z)$

First we expand the bracket ,

it implies that, we use the expression outside the bracket to multiply individual expressions inside the bracket.

Hence

$3 {y}^{2} z(2 {y}^{2} z + 4yz - y + z)$

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we now apply the law of indices

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meaning, when you are multiplying two expressions with the same bases , repeat one of the bases and add the exponents.

Then, simplify to obtain

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3 0

3 years ago

Whats the value of 2.3 • (4+12)

tatyana61 [14]

Hi!

First, you have to add the addition equation.
(4 + 12) = 4 + 12 = 16

Now, the equation will look like this:
2.3 x 16

Now, you just take this equation like normal:
2.3 x 16 = 36.8

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Answer:

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Step-by-step explanation:

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