SOLUTION: (X-1)(4x-8)..find vertex and x intercept

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Question 937884: (X-1)(4x-8)..find vertex and x intercept
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
At the exact middle value between the zeros.

What is the value of x in the middle of 2 and 1 ?
Evaluate the expression at that value.