giúp mềnh với m.n ơi ;-;

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giúp mềnh với m.n ơi ;-;

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9 months 2020-11-02T06:27:51+00:00 2 Answers 61 views 0

1. Đáp án:

1) a mũ 2=5 mũ 2=25

a mũ 3=3 mũ 3=27

2)a mũ 3.a mũ 2.a mũ 5=a mũ 10=?

3 mũ 10=59049

5 mũ 3.5 mũ 6 5=5 mũ 10=9765625

3) 1 000 000=10 mũ 6

64=2 mũ 6

125 .5 mũ 3= 5 mũ 3.5 mũ 3=5 mũ 6

b)8=2 mũ 3

125=2 mũ 3

81=3 mũ4

Giải thích các bước giải:

2. $\text{1)}$

$\text{ a² }$ $\text{ = }$ $\text{ 25 }$ $\text{ = }$ $\text{5²}$

$\text{⇒}$ $\text{ = }$ $\text{ 5 }$

$\text{ a³ }$ $\text{ = }$ $\text{ 27 }$ $\text{ = }$ $\text{ 3³ }$

$\text{ ⇒ }$ $\text{a }$ $\text{ = }$ $\text{ 3 }$

$\text{ 2) }$

$\text{ a) }$ $\text{ a³}$ $\text{ .}$ $\text{ a²}$ $\text{. }$ $a^{5}$ $=$ $a^{3+2+5}$ $=$ $a^{10}$

$b)$ $3^{10}$ $=$ $59049$

$c)$ $\text{ 5³}$ $\text{ .}$ $5^{6}$ $\text{. }$ $\text{ 5}$ $=$ $5^{3+6+1}$ $=$ $5^{10}$

$3)$

$a)$ $1 000 000$ = $10^{6}$

$64$ $=$ $2^{6}$

$1000$ $.$ $100$ $=$ $10 000$ $=$ $10^{5}$

$125$ $.$ $5³$ $=$ $5³$ $.$ $5³$ $=$ $5^{6}$

$b)$ $8$ $=$ $2³$

$125$ $=$ $5³$

$81$ $=$ $3^{4}$