Question

Factor completely: 3x2 + 12x + 7

Answer 1

3(x2+4x+7/3)

3((x+2)^2-5/3)

3(x+2)^2-15/3

3(x+2)^2-5

answer

Answer 2

This expression is not factorizable..

However you can use completion of square method as Shelbyconig have done above..

Answer 3

ok thanks

Answer 4

I disagree. I think it is factorable. In fact, I think any trinomial is factorable. However, in this case, the roots of x are not integers.