SOLUTION: If a*b = b^2-2a, what is the value of (3*4)*5? choose the answer and explain the reason to choose your response 15 23 -9 5

Algebra ->  Complex Numbers Imaginary Numbers Solvers and Lesson -> SOLUTION: If a*b = b^2-2a, what is the value of (3*4)*5? choose the answer and explain the reason to choose your response 15 23 -9 5      Log On


   

Question 483996: If a*b = b^2-2a, what is the value of (3*4)*5?
choose the answer and explain the reason to choose your response
15
23
-9
5
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
a*b = b^2-2a

3*4 = 4^2-2(3)

3*4 = 10
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(3*4)*5 = 10*5


a*b = b^2-2a

10*5 = 5^2-2(10)

10*5 = 5


So (3*4)*5 = 5