1.

Show that (x+5) is a factor of the polynomialf(x)= x^3+x+3x+115​

Answer»

X+5 = -5

F(-5) = - 5×3+(-5)+3×(-5)+115

= 15-2-110

=-97

X+5 is not a FACTOR of x^3+x+3x+115



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