usuń niewymiernośc z mianownika.
a)1 1 3+√2
₋₋₋₋ =------- ·------ =
3-√2 3-√2 3+√2
b) 2
-------=
3+√5
c) 2√3
--------=
√3+2
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usuń niewymiernośc z mianownika.
a)1 1 3+√2 3 + √2 3 + √2 3 + √2
₋₋₋₋ =------- ·------ = ------------ = ........... = --------------
3-√2 3-√2 3+√2 9 - √4 9 - 2 7
b) 2 2 3 - √5 6 - 2√5 6 - 2√5 6 - 2√5
-------= ------- * --------- = ------------- = ---------- = ------------
3+√5 3+√5 3 - √5 9 - √25 9 -5 4
c) 2√3 2√3 √3 - 2 2√9 - 4√3 6 - 4√3
--------= -------- * ---------- = ------------ = ------------- = -6 + 4√3
√3+2 √3+2 √3 - 2 √9 - 4 -1