oblicz
eeeee: a) √1,75 − √3
b) √ 7−5√2 / 1 − √2
c) √2√3 + √2 + 2 * √2√3 − √2 − 2
24 lis 21:02
irena_1:
| | 1 | | √(2−√3)2 | | 2−√3 | |
√1,75−√3= |
| √7−4√3= |
| = |
| |
| | 2 | | 2 | | 2 | |
24 lis 21:14
irena_1:
| 7−5√2 | | (7−5√2)(1+√2) | | −3+2√2 | |
| = |
| = |
| =3−2√2=(√2−1)2 |
| 1−√2 | | 1−2 | | −1 | |
√(√2−1)2=
√2−1
24 lis 21:16
irena_1:
√(2√3+2+√2*√2√3−2−√2=√[2√3+(2+√2)][(2√3−(2+√2)]=
=√12−(2+√2)2=√12−4−4√2−2=√6−4√2=√(2−√2)2=2−√2
24 lis 21:21