**Question:**1. a number that when substituted in an equation makes a true statement what is it called.?

2. what is the numbers and or variables combined with mathematical symbols?

3. what is another word for parentheses or brackets?

4. a statement in which two expressions are equal?

5. what is a role that establishes a relationship between input and output?

**Answers:**

I could only find the first;

Root: a number that, when substituted for the variable in the equation, makes the equation a true statement

if i find more i shall help :)

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