Please help me factor these equations?! HELP!

please help me facor these completly!
1. 6x^2-11x-10
2. 4x^2-9
3. 4x-49x^3
4. 8y^3+27x^3

1) (3x+2)(2x-5)
2) (2x+3)(2x-3)
3) x(4-49x^2) =
x(2+7x)(2-7x)
4) (2y+3x)(4y^2-6xy+9x^2)

Which of these is an equation? Do you know what an equation is? Do you know the difference between factor and factorise? Please find the naswers to these and come back. I shall help you.

1. (2x-5)(3x+2)
2. (2x-3)(2x+3)
3. -x(7x-2)(7x+2)
4. (3x+2y)(9x^2-6xy+4y^2)

I'd advise using wolfram alpha to do factoring like this. It's faster than yahoo answers.