Bogstavregning - VUC Aarhus
Bogstavregning - VUC Aarhus
Bogstavregning - VUC Aarhus
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Matematik på AVU<br />
Opgaver til niveau G<br />
41: Løs (nogle af) disse ligninger:<br />
a: x 2 = 9<br />
b: x 2 = 25<br />
c: x 2 = 64<br />
d: x 2 = 169<br />
e: x 2 = 38, 44<br />
f: x 2 = 0, 25<br />
42: Løs (nogle af) disse ligninger:<br />
a: 2 ⋅ x<br />
2 = 32<br />
b: 3⋅ x<br />
2 = 12<br />
c: 4 ⋅ x<br />
2 = 25<br />
x 2<br />
d: x 2 − 19 = 30<br />
e: x 2 + 4 = 125<br />
f: = 12<br />
3<br />
43: Løs (nogle af) disse ligninger:<br />
a: x = 4<br />
b: x = 10<br />
c: x = 6<br />
d: x = 2<br />
e: x = 8<br />
f: x = 7<br />
44: Løs (nogle af) disse ligninger:<br />
a: 2 ⋅ x = 10<br />
b: 4 ⋅ x = 12<br />
c: 8 ⋅ x = 8<br />
x<br />
d: x − 3 = 4<br />
e: x + 4 = 16<br />
f: = 2<br />
3<br />
45: Løs (nogle af) disse ligninger:<br />
1<br />
a: ⋅ x 2 = 27<br />
b: 3x 2 + 3 = 150<br />
c: 5 x + 10 = 30<br />
3<br />
x<br />
d: − 5 = 20<br />
e: x 2 − 3 15<br />
4<br />
8<br />
=<br />
8 x<br />
f: = 32<br />
3<br />
46: Løs (nogle af) disse ligninger. Afrund resultaterne til en decimal.<br />
a: 7x 2 40<br />
5<br />
= b: 5x 2 − 47 = 103<br />
1 2<br />
c: ⋅ x = 200<br />
4<br />
d: 4 x − 8 = 7<br />
e: x + 2,8 = 13, 5<br />
f: ⋅ x 2 = 50<br />
3<br />
4<br />
<strong>Bogstavregning</strong> Side 84