Mitchell solved a quadratic equation. His work is shown below.
In which step did Mitchel...
Mathematics, 19.03.2020 09:28 ceciliaaa
Mitchell solved a quadratic equation. His work is shown below.
In which step did Mitchell make an error?
5(x−2)² +6=86
5(x−2)²=80 Step 1
(x−2)²=16 Step 2
x²-2²=16 Step 3
x²=20 Step 4
x=±√20 Step 5
Answers: 3
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