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a)√3cm
√3=a√3/2 |*2
2√3=a√3 /:√3
a=2
b)√12cm
√12=a√3/2 |*2
2√12=a√3 /:√3
2√4=a
a=2*2
a=4cm
a)
x²+½√3²=√3²
x²+1,5=3
x²=3-1,5
x=√1,5
b)
x²+½√12²=√12²
x²+6=12
x²=12-6
x=√6