oblicz
a)√12 · √3
b)√32 · √8
c)√10 · √40
d)√18 · √50
e)√28 · √63
f)√45 · √20
g)√30 · √480
h)√80 · √180
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zalacznik
a)
√12= 2√3
12|2
6|2
3
2√3 * √3= 6
b) √32=4√2 lub 2√8
32|2
16|2
8|2
4|2
2|2
0
2√8 * √8= 16
c)
√10= 2√5 lub
√40=4√5
10|2
5
√10*√40=2√5*4√5=20
d)
√18= 3√2
√50= 5√2
√18*√50=3√2*5√2=30
e) √28=2√7
√63=3√7
√28*√63=2√7*3√7=42
f) √45=3√5
√20=2√5
√45*√20=3√5*2√5=30
g) √30
√480=4√30
√30*√480=√30*4√30=120
h)√80=2√20
√180=3√20
√80*√180=2√20*3√20=120