Question

factorise this by splitting the middle term ​

Answer 1

ANSWER

(m - 12)(-m - 9)

Step by Step Explanations

Plz refer to the attachment above to get a detailed answer to the question.

Remember

-There are 3 methods to solve any quadratic polynomial.

1)Middle term Split method.

2)Quadratic Formula method.

3)Completing Square method.

-While using quadratic formula method we first find the value if d i.e discriminant which decides the nature of roots.

-d =$b^2$- 4ac

So,

when d =0

=>the roots will be real and equal.

when d >0

=>then roots will be real and distinct.

when d<0

=>then roots will be imaginary and not real.