Brynlee

07-06-2013, 08:53 AM

SAT-Solving simple surd equation

How to solve the following surd equation

\sqrt{a}-4=5 ??

Thanks:o

How to solve the following surd equation

\sqrt{a}-4=5 ??

Thanks:o

View Full Version : SAT math - Solving simple surd equation

Brynlee

07-06-2013, 08:53 AM

SAT-Solving simple surd equation

How to solve the following surd equation

\sqrt{a}-4=5 ??

Thanks:o

How to solve the following surd equation

\sqrt{a}-4=5 ??

Thanks:o

miranda

07-06-2013, 09:00 AM

In order to solve the following surd equation

\sqrt{a}-4=5

you have first write the equation with only the square root on the left hand side

\sqrt{a}=9

and then square both sides of the equation

(\sqrt{a})^2=9^2

a=81

another SAT quick way is to check the given possible answers by substituting them back into the original equation!!:o:o

Hope these help!!

\sqrt{a}-4=5

you have first write the equation with only the square root on the left hand side

\sqrt{a}=9

and then square both sides of the equation

(\sqrt{a})^2=9^2

a=81

another SAT quick way is to check the given possible answers by substituting them back into the original equation!!:o:o

Hope these help!!

Brynlee

07-06-2013, 09:18 AM

Thank you miranda!!:o

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