Repaso

Repaso

9th Grade

9 Qs

quiz-placeholder

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Repaso

Repaso

Assessment

Quiz

Mathematics

9th Grade

Hard

Created by

Miguel Franco

Used 3+ times

FREE Resource

9 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Al resolver el producto  (x8)(x+7)\left(x-8\right)\left(x+7\right)  obtenemos:

 x2x56x^2-x-56  

 x2+x56x^2+x-56  

 x2x+56x^2-x+56  

 x2+x+56x^2+x+56  

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

     (3x5y2)2\ \ \ \ \left(3x-5y^2\right)^2  al resolverlo obtenemos:


 9x230xy2+25y49x^2-30xy^2+25y^4  

 9x225y49x^2-25y^4  

 9x2+30xy2+25y49x^2+30xy^2+25y^4  

 9x215xy2+25y49x^2-15xy^2+25y^4  

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 (2x+5)(2x5)\left(2x+5\right)\left(2x-5\right)  

El resultado del producto descrito arriba es:

 4x2254x^2-25  

 4x2x254x^2-x-25  

 4x2+x254x^2+x-25  

 4x2+254x^2+25  

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 12x+34y56z(14yxz)\frac{1}{2}x+\frac{3}{4}y-\frac{5}{6}z-\left(\frac{1}{4}y-x-z\right)  

Al reducir la expresión anterior obtenemos:

 32x+12y+16z\frac{3}{2}x+\frac{1}{2}y+\frac{1}{6}z  

 12x+32y116z\frac{1}{2}x+\frac{3}{2}y-\frac{11}{6}z  

 12x+12y+z-\frac{1}{2}x+\frac{1}{2}y+z  

 14x+74y+16z\frac{1}{4}x+\frac{7}{4}y+\frac{1}{6}z  

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 Restar 3x2y+5z De 3x+2z4yRestar\ 3x-2y+5z\ De\ -3x+2z-4y  

 6x2y3z-6x-2y-3z  

 6x+2y+3z6x+2y+3z  

 2y3z-2y-3z  

 6x+2y3z-6x+2y-3z  

7.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 (b2+a3)2\left(\frac{b}{2}+\frac{a}{3}\right)^2  

 b24+ab3+a29\frac{b^2}{4}+\frac{ab}{3}+\frac{a^2}{9}  

 b24+2ab3+a29\frac{b^2}{4}+\frac{2ab}{3}+\frac{a^2}{9}  

 b24+a29\frac{b^2}{4}+\frac{a^2}{9}  

 b242ab3+a29\frac{b^2}{4}-\frac{2ab}{3}+\frac{a^2}{9}  

8.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 Si  m=23 ,  n=12, p=2 . El valor de 2pmnSi\ \ m=\frac{2}{3}\ ,\ \ n=-\frac{1}{2},\ p=-2\ .\ El\ valor\ de\ \frac{2p}{mn}   es:

 12-12  

 1212  

 66  

 6-6  

9.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 (2a5)3=\left(2a-5\right)^3=  

 8a360a2+150a1258a^3-60a^2+150a-125  

 8a3+60a2+150a+1258a^3+60a^2+150a+125  

 8a31258a^3-125  

 8a3+1258a^3+125