This equation is causing a headache. How can I solve it when it has two equal signs in it?
sqrt (x ^ 2 - 49) = sqrt (x ^ 2 - 49) = sqrt (x-7)
Never mind I just saw the folly of my ways. Just from typing this out it helped.
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How can this equation not be true? 
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How can this equation not be true? 
by mamanana on Sun Jul 12, 2009 9:38 pm
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by stapel_eliz on Sun Jul 12, 2009 10:23 pm
mamanana wrote:This equation is causing a headache. How can I solve it when it has two equal signs in it?
sqrt (x ^ 2 - 49) = sqrt (x ^ 2 - 49) = sqrt (x-7)
I don't know what the point of the first square root and "equals" sign is, because it's just repeated information.
Solve the equation created by the second and third radicals only.
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stapel_eliz - Posts: 1703
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