plzz answer the ques
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ii hope this is helpful for you
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Let p ( x ) = x^3 + ax^2 - 2x + a + 6
suppose x + a is a factor of p ( x )
By factor theorem , p ( - a ) = 0
=> (-a)^3 + a × (-a)^2 - 2 × (-a ) + a + 6 =0
=> -a^3 + a^3 + 2a + a + 6 =0
=> 3a + 6 = 0
=> 3a = - 6
=> a = -2
Thus a = -2
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