Question

si A(x)=x3 +3 x -13 calcular el valor de R =A (-2)+ A (1)​

Answer 1

Respuesta:

   

        $R = -36$

Explicación paso a paso:

$A (x) = x^{3} +3x-13$

$R = A (-2 ) + A (1 )$

Sustituyendo el valor de x = -2  y   x = 1 , en el polinomio A ( x ) :

$A ( -2 ) = (-2 )^{3} + 3 ( -2 ) -13 = ( -2 x -2x -2 ) - 6 - 13 = -8 -6 -13$

$A (-2 ) = -27$

$A (1 ) = (1)^{3} + 3 ( 1)-13 = ( 1x 1x1 ) + 3 -13 = 1 +3 -13$

$A (1 ) = -9$

$R = A (-2 ) + A (1 ) = -27 -9$

LUEGO, $R = -36$