ok for the first one i got (xy^2)(a+b)..i dont know if its right
Nope, What you have is axy2+bxy2
Factor out a and b: \(\displaystyle a(x+y^{2})+b({x+y^{2})\)
(a+b)(x+y2)
the second one i got (t-b+t^3+b)(t-b-t^2+b)
Use the difference of two squares. x2−y2=(x+y)(x−y)
Let x=t−b and y=t2+b
the third i got (x-1000)(x^2+1000+1000^2) i dont know if its right.. but can u please help me
Nope, 103=1000
Use the difference of two cubes formula, x3−(10)3
the forth i didnt get what u said about "you have cubed terms, (x)3 and (-2a)3, for the first and last terms," but i got x^2(x-6a)-2a^2(6x-8a)
Use the difference of two cubes formula for x3−(2a)3
please help me i guess i am a bit slow