Answer:
3(2x-5)(x+2)
Explanation:
Given is an algebraic expression in x in degree 2 as

and we have to factor completely.
Seeing the coefficients we find that GCF is 3.
So 3 is a factor
Given expression =

Inside product of last term and coefficient of I term is 20.
5x4 =20 and difference = -1 = the middle term
Hence
![3(2x ^2 - x - 10)\\=3[2x^2-5x+4x-10]\\=3(2x-5)(x+2)](https://img.qammunity.org/2019/formulas/mathematics/college/gjrf6dz8j5t5d2lrw7el8s6zoceh9i8ejt.png)