Question

middle tern splitting of -2n^2+2n+7​

Answer 1

Step-by-step explanation:

To Factorise : x 2−2x+7

By splitting the middle term=x2

−2x−2x+7

=x(x−13)−9(x−13)

=(x−9)(x−13)

So, x 2

−22x+117=(x−9)(x−13)

Hope its help..

Answer 2

Step-by-step explanation:

Now,

x² - 2x - 7

= x² - 2x + 1 - 1 - 7

= (x² - 2x + 1) - 8

= (x - 1)² - (2√2)²

= (x - 1 + 2√2) (x - 1 - 2√2),

which is the required factorization.