Question

factorise by using the method of completing the square

6-x-2x^2

Answer 1

Answer:

U can use middle term here..first u have to arrange them i.e 2x^2-x-6

Step-by-step explanation:

Now,

1. Multiply 2x^2 with -6 which will give -12x^2

2.Now,u have to find that which two monomials u have to subtract or add to get -x as well as their product as -12x^2

3. In point no. 2, the monomials are -4x ND 3x; i.e -4x +3x=-x ND -4x×3x =-12x^2

4.Now,2x^2-4x+3x-6

=2x(x-2)+3(x-2). [By taking

=(X-2)(2x+3). common]