Choose the best definition for the following term: substitution.

1) A letter that holds the place for some unknown value in mathematics

2) A process where you must look for terms that have identical variable parts and then combine their coefficients

3) A process where if two things are equal, one can be put in the place of the other and nothing will change

4) Terms that have identical variable parts
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Question

Choose the best definition for the following term: substitution. 



1) 	A letter that holds the place for some unknown value in mathematics
	
2) 	A process where you must look for terms that have identical variable parts and then combine their coefficients
	
3) 	A process where if two things are equal, one can be put in the place of the other and nothing will change
	
4) 	Terms that have identical variable parts
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misty1212 · Answer

HI!!

anonymous · Answer

Hi Misty!

misty1212 · Answer

i would go with C since 
a) it is almost always C and 
b) it is the only answer that makes sense

anonymous · Answer

I thougth substitution meant the act of replacing the letters with actual numbers. Like subbing values in

anonymous · Answer

However C is DEFINITELY CORRECT and I CAN SWEAR to my mother.

misty1212 · Answer

you can substitute variables for sure 
$$a^2-b^2=(a+b)(a-b)$$ put $a=2x,b=y^2$ get 
$$4x^2-y^4=(2x+y^2)(2x-y^2)$$

anonymous · Answer

How can you type up equations so fast?

misty1212 · Answer

$$\LaTeX$$

anonymous · Answer

obrigadooooo

misty1212 · Answer

de nada 
$$\color\magenta\heartsuit$$

anonymous · Answer

hablas espaniol? Muy bien yo tambien