SOLUTION: What is the average (arithmetic mean) of (x² + 4x - 3), (3x² -4x - 6) and (30 - 4x²)?

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: What is the average (arithmetic mean) of (x² + 4x - 3), (3x² -4x - 6) and (30 - 4x²)?      Log On


   

Question 975943: What is the average (arithmetic mean) of (x² + 4x - 3), (3x² -4x - 6) and (30 - 4x²)?
Answer by Boreal(15235) About Me  (Show Source):
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Add them and divide by 3. Add like variables.
(x² + 4x - 3), (3x² -4x - 6) and (30 - 4x²)=0x^2+0x +21/3
21/3 =7