exam Maths Puzzle Numerical Ability

please help to graph on a number line :

x + 4 < or equal to 2 or x - 4 is NOT < or equal to -1, d = reals

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exam Other Question
ok, I have a problem its a fraction (------------- is the bar)

u^6+v^6+2u^6V^6
-----------------
U^3-V^3+u^2v-uv^2

I realy need to know the awnser and how you got it. Please help me solve these problems.
Factor. Check by multiplying
4x^5 y^3+16x^3 y^2+32xy and
9x^2=72x and
factor by grouping
21x^3-15x^2+28x-20.
Thank you very much!