Check whether x - 2 is a factor of x ^ 3 + 3x ^ 2 - 2x - 12
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Answer:
No it's not a factor
Step-by-step explanation:
x3 + 3x2 - 2x - 12 = 0
Given factor = ( x - 2 )
x = 2
( 2 )3 + 3( 2 )2 - 2 ( 2 ) - 12 = 0
( 2 × 2 × 2) + 3 ( 4 ) - 4 - 12 = 0
8 + 12 - 4 - 12 = 0
20 - 4 - 12 = 0
16 - 12 = 4
Hence ;
x-2 is not a factor
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