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OpenStudy (qqstory):
radical x + radical x-7 = 21/radical x-7
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OpenStudy (qqstory):
\[\sqrt{x} + \sqrt{x-7} = 21\div \sqrt{x-7}\]
OpenStudy (qqstory):
this is hard..
OpenStudy (alexwee123):
no its just algebra
OpenStudy (qqstory):
help please
OpenStudy (alexwee123):
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