Mathematics, 12.03.2021 04:50 cuki96

Andrew solved the equation x2 + 6x = -3 using the steps below.
Step 1: x2 + 6x + 9 = -3 + 9
Step 2: (x + 3)2 = 6
Step 3: x + 3 = +V6
Step 4: x = 3 + VC
In which step did Andrew make a
mistake?

Answers: 1

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Andrew solved the equation x2 + 6x = -3 using the steps below.
Step 1: x2 + 6x + 9 = -3 + 9