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Mathematics 15 Online
OpenStudy (anonymous):

Why is only the positive root taken for sqrt graphs?

OpenStudy (anonymous):

Is the meant to happen or it is just something which is done in the UK's AS Level exams?

OpenStudy (anonymous):

i.e: http://pbrd.co/UMNy23

OpenStudy (anonymous):

because while each positive number has two square roots, the symbol \(\sqrt{a}\) denotes the positive square root

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