Respuestas
Respuesta dada por:
1
Solo debemos reemplazar dicho valor de "x" que se nos asigna en la correspondiente ecuacion :
Entonces:
a)
x = -1 → ( - 1 )⁴ - 3( - 1 )² + ( -1 ) - 1 = 1 - 3 - 1 - 1 = - 4
x = 1 → ( 1 )⁴ - 3( 1 )² + ( 1 ) - 1 = 1 - 3 + 1 - 1 = - 2
b) x⁵ - 2x³ + x² + 2
x = - 1 → ( -1 )⁵ - 2( -1 )³ + ( -1 )² + 2 = - 1 + 2 + 1 + 2 = 4
x = 2 → ( 2 )⁵ - 2( 2 )³ + ( 2 )² + 2 = 32 - 16 + 4 + 2 = 22
c) - 3x³ - 2x - 4
x = - 2 → - 3( - 2 )³ - 2( - 2 ) - 4 = 24 + 4 - 4 = 24
x = 0 → - 3( 0 )³ - 2( 0 ) - 4 = 0 - 0 - 4 = - 4
d) x⁴ + 3x² - 5
x = 1 ( 1 )⁴ + 3( 1 )² - 5 = 1 + 3 - 5 = -1
x = 2 ( 2 )⁴ + 3( 2 )² - 5 = 16 + 12 - 5 = 23
Entonces:
a)
x = -1 → ( - 1 )⁴ - 3( - 1 )² + ( -1 ) - 1 = 1 - 3 - 1 - 1 = - 4
x = 1 → ( 1 )⁴ - 3( 1 )² + ( 1 ) - 1 = 1 - 3 + 1 - 1 = - 2
b) x⁵ - 2x³ + x² + 2
x = - 1 → ( -1 )⁵ - 2( -1 )³ + ( -1 )² + 2 = - 1 + 2 + 1 + 2 = 4
x = 2 → ( 2 )⁵ - 2( 2 )³ + ( 2 )² + 2 = 32 - 16 + 4 + 2 = 22
c) - 3x³ - 2x - 4
x = - 2 → - 3( - 2 )³ - 2( - 2 ) - 4 = 24 + 4 - 4 = 24
x = 0 → - 3( 0 )³ - 2( 0 ) - 4 = 0 - 0 - 4 = - 4
d) x⁴ + 3x² - 5
x = 1 ( 1 )⁴ + 3( 1 )² - 5 = 1 + 3 - 5 = -1
x = 2 ( 2 )⁴ + 3( 2 )² - 5 = 16 + 12 - 5 = 23
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