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solve: sqr a-4=5

 Apr 24, 2014

Best Answer 

 #2
avatar+890 
+5

I choose to interpret sqr as meaning square root, in which case it could be

$$\sqrt {a}-4=5,$$

 

$$a=81,$$

or it could be

$$\sqrt {a-4}=5,$$

leading to

$$a=29,$$

who knows ?

 Apr 24, 2014
 #1
avatar+30086 
+5

I take this to mean a2 - 4 = 5, inwhich case a2 = 9, so there are two possibilities for a, namely a = 3 and a = -3. 

 Apr 24, 2014
 #2
avatar+890 
+5
Best Answer

I choose to interpret sqr as meaning square root, in which case it could be

$$\sqrt {a}-4=5,$$

 

$$a=81,$$

or it could be

$$\sqrt {a-4}=5,$$

leading to

$$a=29,$$

who knows ?

Bertie Apr 24, 2014

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