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sattari [20]
3 years ago
13

Please solve (a^3 - 2a^2) - (3a^2 - 4a^3).

Mathematics
1 answer:
Wittaler [7]3 years ago
8 0

Hi there! Hopefully this helps!

-------------------------------------------------------------------------------------------------------

<h2>Answer: 5a^{3} - 5a^{2}. </h2><h2 /><h2>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</h2><h2 />

|(a^{3} - 2a^{2}) - (3a^{2} - 4a^{3} )

|

| To find the opposite of 3a^{2} -4a^{3}, find the <em>opposite</em> of each term.

\/

a^{3} - 2a^{2} - 3a^{2} + 4a^{3}

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

|

|Combine -2a^{2} and -3a^{2} to get -5a^{2}.

\/

a^{3} - 5a^{2} + 4a^{3}

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

|

|Combine a^{3} and 4a^{3} to get 5a^{3}.

\/

<h2>Answer: 5a^{3} - 5a^{2}</h2>
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Answer:

The constraints are as follows;

1) 2·x + 2·y ≤ 120

2) 3·x + 4·y ≤ 160

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Step-by-step explanation:

The question is a word problem, with the analysis as follows;

The profit from the roast beef special per sandwich = $2.30

The profit from the turkey special per sandwich = $3.10

The number of slices of bread in the roast beef special = Two slices

The number of slices of cheese in the roast beef special = Three slices

The number of slices of bread in the turkey special = Two slices

The number of slices of cheese in the turkey special = Four slices

The number of slices of bread the deli has  = 120 slices

The number of slices of cheese the deli has = 160 slices

Let 'x' and represent the number of roast beef special and 'y' represent the number of turkey special the deli makes, then we have the constraints as follows;

For the number of slices of bread used;

2·x + 2·y ≤ 120...(1)

For the number of slices of cheese used;

3·x + 4·y ≤ 160...(2)

x = 2.30

y = 3.10

The profit 'P' is given by the following equation

P = 2.3·x + 3.10.

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