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Scorpion4ik [409]
2 years ago
14

Subtract and simplify answer.

Mathematics
2 answers:
Schach [20]2 years ago
7 0

(s^2+5st-9t^2)-(2s^2-2st+2t^2)=\\\\=s^2+5st-9t^2-2s^2+2st-2t^2=\\\\=s^2-2s^2-9t^2-2t^2+5st+2st=\boxed{-s^2-11t^2+7st}

Radda [10]2 years ago
7 0

Answer:

-s^2+7st-11t^2

Step-by-step explanation:

s^2 +5st - 9t^2 - ( 2s^2 -2st +2t^2)

Distribute the minus sign

s^2 +5st - 9t^2 -  2s^2 +2st -2t^2

Combine like terms

-s^2+7st-11t^2

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Identify the property being shown here, assuming that a + 2 = y. <br> (a + 2)/3 = y/3
allochka39001 [22]

Assuming that <em>a + 2 = y</em>, the property that was applied to arrived at <em>(a + 2)/3 = y/3</em> is the: division property of equality.

<em><u>Recall:</u></em>

What is done to both sides of an equation will determine what property of equality was applied to the equation.

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Observing the equation stated above, we will see that both sides of the equation was divided by three. This makes both sides equal.

Therefore, assuming that <em>a + 2 = y</em>, the property that was applied to arrived at <em>(a + 2)/3 = y/3</em> is the: division property of equality.

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brainly.com/question/13260378

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