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MrRissso [65]
3 years ago
5

Determina el termino que hace falta en cada trinomio, de modo que sea trinomio cuadrado perfecto. luego, factorizalo

Mathematics
1 answer:
IgorLugansk [536]3 years ago
3 0

Answer:

1) El término faltante es b^{2} = 9. La forma factorizada del polinomio es (\pm 3 \cdot n^{3} \mp 3)^{2}, 2) El término faltante es \pm 10^{\frac{3}{2} }\cdot x^{\frac{5}{2}\cdot n }. La forma factorizada puede ser (\pm \sqrt{10} \cdot x^{\frac{5}{2}\cdot n} \pm 5)^{2} o (\pm \sqrt{10} \cdot x^{\frac{5}{2}\cdot n} \mp 5)^{2}, 3) El término faltante es \frac{1}{4} \cdot y ^{2\cdot n}. La forma factorizada es (\pm 3 \cdot x^{n} \pm \frac{1}{2}\cdot y^{n})^{2}.

Step-by-step explanation:

(This exercise is presented in Spanish and therefore explanation will be held in such language)

Un trinomio cuadrado perfecto es una expresión algebraica que responde a la siguiente identidad:

(a + b)^{2} = a^{2} + 2 \cdot a \cdot b + b^{2}

Este ejercicio pide completar cada trinomio cuadrado perfecto con el componente faltante:

1) 9\cdot n^{6} - 18 \cdot n^{3}...

El término central implica el producto

a = \pm 3\cdot n^{3}

2\cdot a \cdot b = - 18 \cdot n^{3}

2\cdot (\pm 3\cdot n^{3})\cdot b = -18\cdot n^{3}

\pm 6\cdot n^{3}\cdot b = -18 \cdot n^{3}

b = \mp \frac{18\cdot n^{3}}{6\cdot n^{3}}

b = \mp 3

El término faltante es b^{2} = 9. La forma factorizada del polinomio es (\pm 3 \cdot n^{3} \mp 3)^{2}.

2) 10\cdot x^{5\cdot n} + ... + 25

a^{2} = 10\cdot x^{5\cdot n}

a_{1} = +\sqrt{10}\cdot x^{\frac{5}{2}\cdot n } o a_{2} = -\sqrt{10}\cdot x^{\frac{5}{2}\cdot n }

b^{2} = 25

b_{1} = 5 o b_{2} = -5

Existen dos posibles soluciones (y cuatro combinaciones posibles):

Posibilidad 1:

2\cdot a_{1}\cdot b_{1} =  2\cdot (\sqrt{10}\cdot x^{\frac{5}{2}\cdot n }) \cdot  (5)

2\cdot a_{1}\cdot b_{1} = 10^{\frac{3}{2} }\cdot x^{\frac{5}{2}\cdot n }

Posibilidad 2:

2\cdot a_{2}\cdot b_{1} =  2\cdot (-\sqrt{10}\cdot x^{\frac{5}{2}\cdot n }) \cdot  (5)

2\cdot a_{1}\cdot b_{1} = -10^{\frac{3}{2} }\cdot x^{\frac{5}{2}\cdot n }

El término faltante es \pm 10^{\frac{3}{2} }\cdot x^{\frac{5}{2}\cdot n }. La forma factorizada puede ser (\pm \sqrt{10} \cdot x^{\frac{5}{2}\cdot n} \pm 5)^{2} o (\pm \sqrt{10} \cdot x^{\frac{5}{2}\cdot n} \mp 5)^{2}.

3) 9\cdot x^{2\cdot n} + 3\cdot x^{n}\cdot y^{n} +...

a = \pm 3\cdot x^{n}

2\cdot a \cdot b = 3\cdot x^{n}\cdot y^{n}

2\cdot (\pm 3 \cdot x^{n})\cdot b = 3 \cdot x^{n}\cdot y^{n}

\pm 6 \cdot x^{n}\cdot b = 3 \cdot x^{n}\cdot y^{n}

b = \pm \frac{3\cdot x^{n}\cdot y^{n}}{6\cdot x^{n}}

b = \pm \frac{1}{2}\cdot y^{n}

b^{2} = \frac{1}{4}\cdot y^{2\cdot n}

El término faltante es \frac{1}{4} \cdot y ^{2\cdot n}. La forma factorizada es (\pm 3 \cdot x^{n} \pm \frac{1}{2}\cdot y^{n})^{2}.

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qwelly [4]
1 1/2 = 3/2
5 5/6 = 35/6

3/2 : 35/6
9/6 : 35/6
9 : 35

The answer is 9:35

Hope this helps.
7 0
3 years ago
Help me please<br> Solve the system algebraically using substitution.
cluponka [151]

Answer:

y = 5/3

x = 8/3

Steps:

y = x - 1

2x + y = 7

Substitute y = x-1

(2x + x - 1 = 7)

Simplify: 3x - 1 = 7

Isolate x: 3x - 1 = 7:  x=8/3

Plug the valuse of x into the other equation (y = x- 1):    y = 8/3 - 1

8/3 - 1 = 5/3

y = 5/3

y = 5/3, x = 8/3

3 0
3 years ago
An ice cream cone has a diameter of 7 cm and a height of 13 cm. How many milliliters of melted ice cream can it hold? (1 cm3 hol
allsm [11]
This question is asking for the volume of the cone.
The formula is 1/3π r²h where r is radius and h is height.
First we must find the radius by dividing the diameter in half, giving us 3.5
Now we plug our values into the formula like this:

1/3 π r²h
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Hope this helps :)
6 0
3 years ago
PLZ HELPPPP!!!!!!!!!
Setler79 [48]
The answer is 1/3. :)
8 0
3 years ago
It takes two apples to make an apple pie. If a chef bought nine apples, the last pie
defon

Hey!

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

If a chef bought 9 apples and each pie takes 2 apples then all we have to do is divide.

9 / 2 = 4.5

4 full pies can be made with 9 apples.

4 x 2 = 8 (apples were used to make 4 pies.)

9 - 8 = 1 (apple remaining)

If one pie needs 2 apples, subtract.

2 - 1 = 1 (pies the chef needs to make the last one)

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

Answer: The last pie would need 1 more apple.

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

Hope This Helped! Good Luck!

5 0
2 years ago
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