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Valor numérico de expresiones algebraicas

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Valor numérico de expresiones algebraicas

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Expresiones algebraicas, valor numérico

Created by

KEILY SOFIA MEJIA RAMOS
KEILY SOFIA MEJIA RAMOS
El Salvador

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Valor numérico de expresiones algebraicas
 

Valor numérico de expresiones algebraicasOnline version

Expresiones algebraicas, valor numérico

by KEILY SOFIA MEJIA RAMOS
1

Si x=2, ¿cuál es el valor de 3x+5?

2

Si a=4, ¿cuál es 2a^2 - a?

3

Si b=-3, ¿cuál es b^3 - 2b?

4

Si x=5, ¿cuánto vale (x+4)^2?

5

Con p=7, evalúa 3(p-2).

6

Si x=4, valor de (2x-3)/(x+1).

7

Con y=6, ¿cuánto es 5y - 2(y+4)?

8

Si x=-2, evalúa x^2+3x.

9

Con a=3, valor de a^2 - 4a + 4.

10

Si x=5, evalúa 6/(x-2).

Explicación

Sustituye x por 2: 3(2)+5=6+5=11. Las demás no reflejan la sustitución correcta.

2(4)^2 - 4 = 2·16 - 4 = 32 - 4 = 28.

(-3)^3 - 2(-3) = -27 + 6 = -21.

(5+4)^2 = 9^2 = 81.

3(7-2)=3·5=15.

(8-3)/(4+1)=5/5=1.

5·6 - 2(6+4) = 30 - 2·10 = 30 - 20 = 10.

(-2)^2 + 3(-2) = 4 - 6 = -2.

3^2 - 4·3 + 4 = 9 - 12 + 4 = 1.

6/(5-2)=6/3=2. Las demás son sustituciones incorrectas.

 
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