Haynes Mcfarlane
07/31/2024 · Elementary School
1. Si \( \quad a=-3 ; b=2 \) y \( c=-1 \), entonces el valor de la expresión, \( 2 a-3 c-(b: c)+2 a b c \) es: a) 1 b) 8 c) 11 d) 18 e) -5
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Para resolver la expresión \( 2a - 3c - (b : c) + 2abc \) con los valores \( a = -3 \), \( b = 2 \) y \( c = -1 \), primero sustituimos los valores en la expresión:
1. Sustituyendo los valores:
\[
2(-3) - 3(-1) - (2 : -1) + 2(-3)(2)(-1)
\]
2. Calculamos cada término:
- \( 2(-3) = -6 \)
- \( -3(-1) = 3 \)
- \( 2 : -1 = -2 \)
- \( 2(-3)(2)(-1) = 2 \cdot -3 \cdot 2 \cdot -1 = 12 \)
3. Sustituyendo los resultados en la expresión:
\[
-6 + 3 - (-2) + 12
\]
4. Simplificamos:
\[
-6 + 3 + 2 + 12
\]
5. Realizamos las operaciones paso a paso:
- \( -6 + 3 = -3 \)
- \( -3 + 2 = -1 \)
- \( -1 + 12 = 11 \)
Por lo tanto, el valor de la expresión es \( 11 \).
La respuesta correcta es:
c) 11
Quick Answer
El valor de la expresión es 11.
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