Question

FACTORISE THE FOLLOWING: 9x^4-x^2-12x-36.​

Answer 1

Step-by-step explanation:

9x

4

−x

2

−12x−36

Above terms can be written as ,

9x

4

−(x

2

+12x+36)

We know that (a+b)

2

=a

2

+2ab+b

2

(3x

2

)

2

−(x

2

+∗2×6×x)+6

2

)

So (3x

2

)

2

−(x+6)

2

We know that a

2

−b

2

=(a+b)(a−b)

(3x

2

+x+6)(3x

2

−x−6)