Question

Check whether (x-2) is a factor of x
2+7x-18

Answer 1

Answer:No this (x-2) is not a factor of 2+7x-18

Step-by-step explanation:-

If p(x) = 2+7x-18

and x-2=0

x=2 -------–(i)

p(2) = 2+(7×2) -18

= 2+14-18

= -2

As p of 2 is not equal to -2.

Hence it is not a factor of 2+7x-18

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Answer 2

Answer:

  Given:- x ^2+7x-18

  To find :- Check whether (x-2) is a factor of  

     x^2+7x-18

  Hence

  =  x^2+7x-18  = x^2+9x-2x-18

  =   x(x+9)-2(x+9)

  =   (x-2) (x+9)

Hence (x-2) is a factor of x ^2+7x-18

Step-by-step explanation: