+0

solve: sqr a-4=5

0
412
2

solve: sqr a-4=5

Apr 24, 2014

#2
+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

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

$$a=29,$$

who knows ?

Apr 24, 2014

#1
+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
+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

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

$$a=29,$$