Oblicz:
2√1,75 - √63
---------------- =
√7
2√1,75 - √63 2√1,75-6√1,75 -4√1,75
---------------- = -----------------------=------------=-4√1,75 :√7=-4√1,75:7=-4√0,25=
√7 √7 √7 =-4×0,5=-2
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2√1,75 - √63 2√1,75-6√1,75 -4√1,75
---------------- = -----------------------=------------=-4√1,75 :√7=-4√1,75:7=-4√0,25=
√7 √7 √7 =-4×0,5=-2