oblicz a
5=a√2
dzięki z góry :)
5=a√2 /:√2
a=5/√2
a=(5√2)/(√2√2)
a=5√2/√4
a=5√2/2
a=2,5√2
5=a√2 /x√2
5√2=2a /:2
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5=a√2 /:√2
a=5/√2
a=(5√2)/(√2√2)
a=5√2/√4
a=5√2/2
a=2,5√2
5=a√2 /x√2
5√2=2a /:2
a=2,5√2