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masha68 [24]
2 years ago
6

Both (x−3)(x+3) and (3−x)(3+x) contain a sum and a difference and have only 3 and x in each factor. If each expression is rewrit

ten in standard form, will the two expressions be the same? Explain or show your reasoning.
Mathematics
1 answer:
Ierofanga [76]2 years ago
5 0

The expression is rewritten in standard form and they are not the same due to the negative.

<h3>What is simplification of an expression?</h3>

Usually, simplification involves proceeding with the pending operations in the expression.

Simplification usually involves making the expression simple and easy to use later.

Both (x−3)(x+3) and (3−x)(3+x) contain a sum and a difference and have only 3 and x in each factor.

Let see the equation formed by the factor;

(x−3)(x+3)

= x^2 + 3x - 3x - 9

= x^2 - 9

(3−x)(3+x)

= 9 + 3x - 3x - x^2

= 9 - x^2

The expression is rewritten in standard form and they are not the same due to the negative.

Learn more about an expression here:

brainly.com/question/1249625

#SPJ1

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Point A, B and C are colinear, and B lies between A and C. If AC= 48, AB= 2x+2 and BC= 3x+6, what is BC?
Degger [83]
First, u have to find x so u set up this equation:
2x+2+3x+6=48
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3 years ago
One angle of an isosceles trapezoid has measure 57. What are the measures of the other angles?
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3 0
3 years ago
Read 2 more answers
A tank can be filled by one pump in 3.2 hours and by another pump in 80 minutes. A third pump can drain the tank in 2 hours and
Mademuasel [1]

Answer:

Rounding to the nearest minute, it would take 95 minutes, or 1 hour and 35 minutes.

Step-by-step explanation:

Let's convert each time to minutes:

3.2 hours = 192 minutes

80 minutes = 80 minutes

2 hr 20 min = 140 minutes

Next, let's find the least common multiple:

LCM(192, 80, 140) = 6720

So let's say the volume of the tank is 6720 units.  The speed of each pump is therefore:

Pump 1 = 6720 units / 192 minutes = 35 units/minute

Pump 2 = 6720 units / 80 minutes = 84 units/minute

Pump 3 = -6720 units / 140 minutes = -48 units/minute

Their combined speed is:

35 + 84 − 48 = 71 units/minute

So the time to fill the tank is:

6720 units / (71 units/minute) = 94.65 minutes

Rounding to the nearest minute, it would take 95 minutes, or 1 hour and 35 minutes.

6 0
3 years ago
I am so confused plz halp
lyudmila [28]

Step-by-step explanation:

Hope it helps man .. ....

5 0
3 years ago
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When the county fair opened its gates, 68 people entered the fairgrounds. After one hour, there were 1.5 times as many people on
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Answer:

y=68(1.5)^(x-1)

Step-by-step explanation:

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