Question 361944
1. 8x+12y-2x^2-3xy
4(2x+3y)-x(2x+3y)
(2x+3y)(4-x)

2.9x^2-16
difference of two squares
(3x)^2-(4)^2
(3x+4)(3x-4)

3.14x^2-7x^3 
7x^2(2-x)


4. x^2-6x-5  ( i think this should be +5) OR this can be solved by quadratic formula.( I have assumed +5)Please check
x^2-5x-x+5
x(x-5)-1(x-5)
(x-5)(x-1)

5. 4x^2-12xy+9y^2
(2x-3y)^2

Please help me! 
m.ananth@hotmail.ca