This question was asked in Ex 2.4,2

From where -1 is come in 2nd que.

Rohit Lodhi

April 19, 2018, 7:39 p.m.

Answers!

Davneet Singh

April 19, 2018, 8:07 p.m.

Hello Rohit

To use factor theorem, we put

Divisor = 0

i.e. x + 1 = 0

x = -1

So, thats where -1 comes from. Please check the video at the bottom

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