Question 1

$ x+x+x+x $

Accepted Answer

$4x$

Answer

$5x$

Answer

$4$

Answer

$2x$

Question 2

$2x ^2y-2xy+3x^2y$

Accepted Answer

$5x^2y-2xy$

Answer

$5x^2-2xy$

Answer

$5xy^3-2xy$

Answer

$3x^2-2xy$

Question 3

$2x^2-4x^2+y=$

Accepted Answer

$-2x^2+y$

Answer

$-3xy^2$

Answer

$-y+2x$

Answer

$2x^2-y$

Question 4

$4z-2x+5y-3x+8z=$

Accepted Answer

$12z-5x+5y$

Answer

$12x-5y+5z$

Answer

$10x-6y+5z$

Answer

$4x-6y+8z$

Question 5

¿Calcula el perímetro de la siguiente figura?

Accepted Answer

$10x^2-5y$

Answer

$3x^2-10y$

Answer

$2x^2-5y$

Answer

$5x^2-5y$

Question 6

¿Cuál es el perímetro de la siguiente figura?

Accepted Answer

$7x^2-35y-63z$

Answer

$7x^2-25y-54z$

Answer

$7x^2-15y-81z$

Answer

$-7x^2+30y-65z$

Question 7

Restar la segunda expresión de la primera. $3a-2b+4c-d$  : $2a+b-3c-d$

Accepted Answer

$a-3b+7c$

Answer

$a-2b-6c$

Answer

$a-b-c$

Answer

$a-3b-4c$

Question 8

Restar la segunda expresión de la primera $m^4+6m^3-7m^2+8m-9$ :          $2m^3+3m^2-4m-3$

Accepted Answer

$m^4+4m^3-10m^2+12m-6$

Answer

$m^4+m^3-10m^2+12m-6$

Answer

$m^4+4m^3-8m^2+10m-6$

Answer

$m^4+2m^3-10m^2+12m-6$

Question 9

$(-2x^2+6x)-(-2x^2+5x)$

Accepted Answer

$x$

Answer

$x^2$

Answer

$4x^2+12x$

Answer

$4x^2+11x$

Question 10

$(3a-6b-8)-(a-b-c)$

Accepted Answer

$2a-5b-c-8$

Answer

$4a-5b-c-8$

Answer

$2a-7b-c-8$

Answer

$2a-5b-6$

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