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OpenStudy (anonymous):
√(x+2)²+(0-6)²=√(x-9)²+(0-3)² (x+2)-6=(x-9)-3 x-4= x-12 Why are these steps wrong and how to avoid such mistakes in the future?
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OpenStudy (mrnood):
I assume th esquare root applies to the whole expression on each side sqrt (a^2+b^2) is NOT equal to sqrt (a)^2 + sqrt(b)^2
OpenStudy (anonymous):
You're right, can't believe I missed that
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