Espressioni con l’estrazione di radicee il logaritmo.
Completi di soluzione guidata.Square root and logarithm Expressions.
1. √64 + 51+ log216 + log636 soluzione 19
2. log232·(log264 + log327 − √16) + log39 − 7 − (13 + 6 − √25): (log28 + 4)·5 soluzione 10
3. 4√9 + (10 + log327) + 22∙ log525 + √49 soluzione 40
4. 70∙ 71+ (4 + √100 − √1) + (√36 + √121) + 2 ∙ log749 − √1 soluzione 40
5. √4 + log216 + log39 + 3 ∙ √169 soluzione 47
6. [(log216 + log525 + 13 ∙ √9): (34 ∶ 33)]2 ∶ (54: 53)2 soluzione 1 7.
log 81 4
3 log 100
: log 169 1
:
log24: 4
2 13
2 10
3
1
soluzione
8. 36log381log327 9 1 soluzione 16
9.
log 128: 343
log10100 log39
log91 log99 3 22 soluzione 5
10.
log 128 125
log 4
log 4
2
2 log232 132 2 3
2 3 2
2 soluzione 2
11.
7
2
13 2 13 2
11 3
5 3
416 27 : log 125 log 121 25 log 169 6 : log 49
log soluzione 1
12.
log 64: 9 256: 4 16
log 64
9:2 49:log2128
2 8 4 3
2 soluzione 0
13.
9 2 25
36 2 12:7 16 492log28 soluzione 7514.
36 81 16 49 log216 16
2 2 3 3 27 9 625 42:3
3: 6252
soluzione 5
15.
2
19. (37: 36+ log2128 · √16): (17 + log381 + √144 − 21) + 52· 22 ∶ (log636 · 5 · 20) soluzione 11 20.
√(2 + 2 ∙ log264)2− 23 ∙ 3 − √39 − 2 ∙ log2128 + √(2 ∙ √25)2+ 21
11 soluzione
A Titti, Mao, Filippo, Massimiliano e Ludovico per la loro ospitalità – Befana 2005 Treviso
Soluzioni
√64 + 51+ log216 + log636 =
= 8 + 5 + 4 + 2 =
= 13 + 4 + 2 = NB 8+2=10 e 5+4=9 (addizione commutativa e associativa)
= 17 + 2 = 19
√64𝑥
2=64
→ 8 log2162
𝑥=16
→ 4 log6366
𝑥=36
→ 2
log232·(log264 + log327 − √16) + log39 − 7 − (13 + 6 − √25): (log28 + 4)·5 =
= 5 · (6 + 3 − 4) + 2 − 7 − (13 + 6 − 5) ∶ (3 + 4) · 5 =
= 5 · (9 − 4) + 2 − 7 − 14 ∶ 7 · 5 =
= 5 · 5 + 2 − 7 – 2 · 5 =
= 25 + 2 − 7 − 10 =
= 27 − 7 − 10 =
= 20 − 10 = 𝟏𝟎
log2322
𝑥=32
→ 5 log2642
𝑥=64
→ 6 log3273
𝑥=27
→ 3 log393
𝑥=9
→ 2 log282
𝑥=8
→ 3
4√9 + (10 + log327) + 22∙ log525 + √49 =
= 4 ∙ 3 + (10 + 3) + 4 ∙ 2 + 7 =
= 12 + 13 + 8 + 7 =
= 12 + 8 + 13 + 7 =
= 20 + 20 = 40
√9𝑥
2=9
→ 3 log3273
𝑥=27
→ 3 log5255
𝑥=25
→ 2
√49𝑥
2=49
→ 7
70∙ 71+ (4 + √100 − √1) + (√36 + √121) + 2 ∙ log749 − √1 =
= 1 ∙ 7 + (4 + 10 − 1) + (6 + 11) + 2 ∙ 2 − 1 =
= 7 + 13 + 17 + 4 − 1 =
= 7 + 30 + 4 − 1 =
= 37 + 4 − 1 = 40
√100𝑥
2=100
→ 10
√1𝑥
2=1
→ 1
… log7497
𝑥=49
→ 2
√4 + log216 + log39 + 3 ∙ √169 =
= 2 + 4 + 2 + 3 ∙ 13 =
= 8 + 39 =47
√4𝑥
2=4
→ 2 log2162
𝑥=16
→ 4 log393
𝑥=9
→ 2
[(log216 + log525 + 13 ∙ √9): (34 ∶ 33)]2 ∶ (54: 53)2 =
= [(4 + 2 + 13 ∙ 3): (34−2)]2 ∶ (54−3)2 =
= [(6 + 39): (32)]2 ∶ (51)2 =
= [45: 9]2 ∶ 51∙2 =
= 52 ∶ 52 = 1
log3814 3log10100 2 log131691 2 log24 4
34 43
51 3 12 2 1 2 2 3 4 4
4 4 log 1
169 log 100
log 3 4 81 log
2 2
2 2
2 2
2 2
13 2
10 3
log 81 log 27 9 1
36 3 3
16 3 3 10
3 3 4 6
1 3 3 4 6
1 9 27 log 81 log
36 3 3
5 1 4 1 4 1
1 4 1
1 0 2 2 7 : 7
9 log 1 log 9 log 100 log 343
: 128 log
2 2
9 9
3 10
3 2 2
log 128 125
log 4
log 4
2
2log232 132 2 3
2 3 2
2
2 10 12
10 8 4
10 2 4
10 2 4 8 2
5 2 2 2 2 5 7
3
3
3
2
2 2 3
7
2
13 2 13 2
11 3
5 3
416 27 log 125 log 121 25 log 169 6 log 49
log
1 6 6
9 8 7 6
9 8 20 27 6
4 36 8 5 4 27 6
2 36 2 5 2 3 3
2 3 2 3 2
log 64 9 256 4 16
log 64
92 49log2128
2 8 4 3
2
12 2 1
00
1 2 3 4 4 2 2
7 7 2 3 2 4 2 4 3 6
3
3
3 2
9 2 25
36 2 12:7 16 492log28
75 56 10 9
56 4 6 9
56 4 7 : 42 9
8 7 4 7 : 1 36 5 9
2 7 4 7 : 1 6 5 3
2 49 16
7 : 1 36
25 9
3 2
2 2
8 2 log
2 2
2
36 81 16 49log 16 16 23 27 9 62567:3 : 625
3 2 3
2 2
33 2 3
2 3 2 3 2
25 : 15 20
25 : 15 16 36
25 : 15 4 36
25 : 14 25 54 4
28 36 36
25 : 3 : 42 25 3 3 3 2 4 4 7 4 9 6
1 125: 25 1log 64 log 81 64 2 88 :2 : 1 16
2 3 2 3
3 3 2 8 3
4 4 4
4 : 4
4 : 8 : 32
4 : 8 : 16 2
4 : 8 : 8 2 2 4 4 2 1 1
4 1 : 2 : 8 2 2 4 4 2 1 5 : 5 1
1 1 2 2
2 2
2 2 2
3 2 2
2
log 5 125 25 64:log 100 log 16 64 2 88 :2 : 5 log31 25
2 3 3
3 2 2 2 10 3
5
125 5
5 5 : 5
5 : 25
5 : 4 : 100
5 : 4 : 16 26
5 : 2 2 : 1 16 25 1
5 : 8 : 8 2 2 : 4 : 4 2 8 5 5 1
3 1 4 4
2 2
2 2 2 2 2
2 2 2
4√1
+ (√1 + √16 − log327)2− (log216 + log39 + log264) =
= 1 + (1 + 4 − 3)2 − (4 + 2 − 6) =
= 1 + (5 − 3)2 − (6 − 6) =
√49 − 24: (log525)2− [√9 + (√273 + 173: 172): 2 + 2]: log232 =
= 7 − 24: 22 – [3 + (3 + 173−2) ∶ 2 + 2] ∶ 5 =
= 7 – 24−2 – [3 + (3 + 17): 2 + 2] ∶ 5 =
= 7 – 22 – [3 + 20 ∶ 2 + 2] ∶ 5 =
= 7 − 4 – [3 + 10 + 2] ∶ 5 =
= 7 − 4 – 15 ∶ 5 =
= 7 − 4 – 3 =
= 3 – 3 = [𝟎]
(37: 36 + log2128 · √16): (17 + log381 + √144 – 21) + 52 · 22∶ (log636· 5 · 20) = (9 ∶ 3 + 7 · 4): (17 + 4 + 12 – 2) + 25 · 4 ∶ (2 · 5 · 1) =
= (3 + 28) ∶ (21 + 12 – 2) + 100 ∶ 10 =
= 31 ∶ (33 – 2) + 10 =
= 31 ∶ 31 + 10 =
= 1 + 10 = [𝟏𝟏]
√(2 + 2 ∙ log264)2− 23 ∙ 3 − √39 − 2 ∙ log2128 + √(2 ∙ √25)2+ 21 =
= √(2 + 2 ∙ 6)2− 69 − √39 − 2 ∙ 7 + √(2 ∙ 5)2+ 21 =
= √(2 + 12)2 − 69 − √39 − 14 + √102+ 21 =
= √142− 69 − √39 − 14 + √100 + 21 =
= √196 − 69 − √39 − 14 + √121 =
= √127 − √25 + 11 =
= √127 − √36 =
= √127 − 6 =
= √121 = 11
Keywords
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