find a if ×^3-ax^2+6x-a is divisilbe by (x+2)
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Answer:
x+2=0
x=- -2
Step-by-step explanation:
substitute the value of x
(-2)^3-a(-2)^2+6(-2)-a=0
-8+4a-12-a=0
-20+3a=0
3a=20
a=20/3
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