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karansingh
  • -2

What should be subtracted from the polynomial of p(x)= x²-3ax + 3a- 7 so that, (x + 2) is a factor of the polynomial p(x) and hence also find the value of a

  • -2

this question is very important from class 10 boards perspective.

kindly help with this

 

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1 Answer

  1. Since x+2 is a factor of the polynomial p(x) for

    x*2−3ax+3a−7

    Therefore, by Factor theorem p(−2)=0

    ⇒(−2)

     

    (-2)*2−3a(−2)+3a−7=0

    ⇒4+6a+3a−7=0

    ⇒a= -1

    • -8
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