Question

if a is national number then find the value of a in the following equation 1/under root of 8=a under root 2

Answer 1

1
_ =a√2
√8
1
__ =a√2
√2×4
1
_ =a√2
2√2
1
___ =a
2×√2×√2
1
___ = a
2×2
1
_ =a
4
a= 1/4 or 2^-2 ...
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