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Matemática 9°

Authored by Jilma Castrejón

Mathematics

9th Grade

Used 12+ times

Matemática 9°
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15 questions

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1.

MULTIPLE CHOICE QUESTION

5 mins • 3 pts

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Representa una diferencia de cubos perfectos

a3+1a^3+1^{ }

a3+3a2+3a−1a^3+3a^2+3a-1

a6−27a^6-27

2.

MULTIPLE CHOICE QUESTION

5 mins • 3 pts

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Son ejemplos de cuadrados perfectos

a2,16\sqrt[]{a^2},16

1, a41,\ \sqrt[]{a^4}

m5 ,16m^5\ ,16

3.

MULTIPLE CHOICE QUESTION

5 mins • 3 pts

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La expresión 27a61253\sqrt[3]{\frac{\text{27}a^6}{\text{125}}} es igual a:

3a25\frac{\text{3a}^2}{\text{5}}

3a35\frac{\text{3a}^3}{\text{5}}

3a185\frac{3a^{18}}{5}

4.

MULTIPLE CHOICE QUESTION

5 mins • 3 pts

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La expresión (x +9)(x−9)\left(x\ +9\right)\left(x-9\right) es igual a:

x2+18x−81x^2+18x-81

x2−81x^2-81

x2−x+81x^2-x+81

5.

MULTIPLE CHOICE QUESTION

5 mins • 3 pts

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El mínimo común múltiplo de a2(x+b)2, a(x+b)(x−b)a^2\left(x+b\right)^2,\ a\left(x+b\right)\left(x-b\right) es:

a2(x+b)a^2\left(x+b\right)

(x+b)(x−b)\left(x+b\right)\left(x-b\right)

a2(x+b)2(x−b)a^2\left(x+b\right)^2\left(x-b\right)

6.

MULTIPLE CHOICE QUESTION

5 mins • 3 pts

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La expresión simplificada de 81a2b43x6\sqrt[]{\frac{81a^2b^4}{3x^6}}

ab2x39\frac{ab^2}{x^3}\sqrt[]{9}

3ab2x3\frac{3ab^2}{x^3}

81 ab23x3\frac{\sqrt[]{81\ ab^2}}{3x^3}

7.

MULTIPLE CHOICE QUESTION

5 mins • 3 pts

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Al reducir los términos x2y+xy2−7x2y+5x^2y+xy^2-7x^2y+5 obtengo

−6x2y+xy2+5-6x^2y+xy^2+5

−7x2y+5-7x^2y+5

2xy2−7x2y+52xy^2-7x^2y+5

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