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Suppose we want to factorise

  x 2 + 7x + 12

 

We factorise it by splitting the middle term

x 2 + 7x + 12

Splitting the middle term - Factorising Polynomial.jpg

= x 2 + 4x + 3x + 12

= x(x + 4) + 3(x + 4)

= (x + 3)  (x + 4)

 

So, x 2 + 7x + 12 = (x + 3)  (x + 4)

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.