Question

fill in the blank.

x³+12x²+ax+60 then a = ______.

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Answer 1

Answer:

x³+12x+ax+60

Therefore

-(x³+12x+60/x)=a

Step-by-step explanation:

Let ,

x³+12x+ax+60=0

x³+12x+60= -ax

x³+12x+60/x= -a

-(x³+12x+60/x)=a

Therefore

a= -(x³+12x+60/x)