Josephine solved a quadratic equation: (x+6)^2=49. Her work is shown below.
Step 1: √(x+6)^2 = √49
Step 2: x+6 = 7
Step 3: x = 7−6
Step 4: x = 1
In which step did Josephine make an error?
A step 4
B step 1
C step 2
D step 3
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2 answers

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Step 1: √(x+6)^2 = √49
no
Step 1: √(x+6)^2 = +or√49
so
x + 6 = 7
or
x + 6 = 7
x = 1
or x =  13 👍
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