Matematyka wokół nas, kl. 2 (gimn), s. 34 z. 16 (podr.)
a)
b)
4√63-8√28+√700=a√7
12√7-16√7+10√7=a√7
6√7=a√7 /:√7
a=6
√27+√108-√12+√75=a√3
3√3+6√3-2√3+5√3=a√3
12√3=a√3/:√3
a=12
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4√63-8√28+√700=a√7
12√7-16√7+10√7=a√7
6√7=a√7 /:√7
a=6
√27+√108-√12+√75=a√3
3√3+6√3-2√3+5√3=a√3
12√3=a√3/:√3
a=12