How would you simplify 3x^3 + 9z +2x^3 +5z +6x^2 by combining like terms?

Question

anonymous · Answer

Would the answer be 11x^3+14z ?

anonymous · Answer

$$(3x^3+2x^3)+(6x^2) +(9z+5z)$$

every thing in a bracket is a "like term" try again

anonymous · Answer

Well I guessed pretty much . I have no idea how to do this .Could you possibly explain how to ..?

anonymous · Answer

so first you need to understand what a like term is..... 

3, 4, 5, 6 are all CONSTANTS (like terms)

3x  5x 6x 7x  are all like terms (only have one x value)

so basically they have to belong to the same family to be a like term...

can you give me another example of some like terms?

anonymous · Answer

6x ,8x,10x

anonymous · Answer

how about 

$$x^3$$ and 
$$x^4$$
are they like terms?

anonymous · Answer

hello?

anonymous · Answer

yes?

anonymous · Answer

you sound unsure,

$$x^3=x \times x \times x$$

$$x^4=x \times x \times x \times x$$

do you still think they are like terms?

anonymous · Answer

.....

anonymous · Answer

5x^3+14z+6x^2