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MrRissso [65]
3 years ago
6

If x = 3, then x^2 = 3x what property

Mathematics
1 answer:
atroni [7]3 years ago
8 0
X=3
(3)^2=3(3)
9=9
true
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Which shows a perfect square trinomial?
anastassius [24]
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Since we need trinomial (three term expression) choices a and b are incorrect because they have only two terms.

So, our square trinomial is a</span>² + 2ab + b² or a² - 2ab + b²
a² + 2ab + b² = (a + b)²
a² - 2ab + b² = (a - b)²

Let's check choices c and d:
c) 16x² + 24xy + 9y²
a² = 16x²
a² = (4x)²
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CORRECT

d) 49x² - 70xy + 10y²
a² = 49x²
a² = (7x)²
a = 7x

b² = 10y²
b² = (y√10)²
b = y√10

a² + 2ab + b² = (7x)² + 2 * 7x * y√10 + (y√10)² = 49x² + 14xy√10 + 10y²
INCORRECT

So, c) is correct answer
8 0
4 years ago
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A)250cm =______ mm.<br>b)5000m = ____ km. <br>c) 200km =______cm.​
Liono4ka [1.6K]

Answer:

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b = 5km

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Step-by-step explanation:

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Step-by-step explanation:

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Due in 10 min<br> Need explination also<br> first helpfull answer will be brainlyest
Doss [256]
My answer is 25 so yeah

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3 years ago
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