Tính
gấp.giải=5 sao và xu tùy vận may có thể xin bn cx đc !
----- Nội dung ảnh -----
**Bài 8. Tính:**
1) \( 25:5.7 \)
2) \( 30:2.8.4 \)
3) \( 20:2.14 \)
4) \( 125:5^3.170 \)
5) \( 64:2^5.30.4 \)
6) \( (25:5.30):15.7 \)
7) \( \left[ (5^2:10).4 \right]:(2^2:5:2) \)
8) \( (15:3.5^2):(20:2^2) \)
9) \( 2^2.3^2-5:2.3 \)
10) \( 3^2.5-2^2.7+1.5 \)
11) \( 5^2-3-5^2.3 \)
12) \( 7^2-7(13-x)=14 \)
13) \( (5^2-20):5+3^2.6 \)
14) \( (24.5-5^2.2):(5.2)-3 \)
15) \( \left[ (5^2.3-7^2:2).2.6-7.2^5 \right] \)
16) \( (6.5^2-13.7).2-2^3(7+3) \)
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**Bài 24. Tìm số tự nhiên x, biết:**
1) \( 5.2^2 + (x+3) = 5^2 \)
2) \( 2^3 + (x-3)^2 = 5^3 - 4^3 \)
3) \( 3^3 - (x + 4) = 7 \)
4) \( 7^2 - (15+x) = 5.2^2 \)
5) \( 4(x-5) - 2^3 = 2^4 \)
6) \( 2^4 - 2(15-x) = 10 \)
7) \( 5(x+7) - 10 = 2^3.5 \)
8) \( 7^2 - 7(13-x) = 14 \)
9) \( 5x - 5^2 = 10 \)
10) \( 14x - 2.7^2 = 2.3.7 \)
11) \( 9x + 2.3^2 = 3^4 \)
12) \( 10x + 2^2.5 = 10^2 \)
----- Nội dung ảnh -----
**Bài 8. Tính:**
1) \( 25:5.7 \)
2) \( 30:2.8.4 \)
3) \( 20:2.14 \)
4) \( 125:5^3.170 \)
5) \( 64:2^5.30.4 \)
6) \( (25:5.30):15.7 \)
7) \( \left[ (5^2:10).4 \right]:(2^2:5:2) \)
8) \( (15:3.5^2):(20:2^2) \)
9) \( 2^2.3^2-5:2.3 \)
10) \( 3^2.5-2^2.7+1.5 \)
11) \( 5^2-3-5^2.3 \)
12) \( 7^2-7(13-x)=14 \)
13) \( (5^2-20):5+3^2.6 \)
14) \( (24.5-5^2.2):(5.2)-3 \)
15) \( \left[ (5^2.3-7^2:2).2.6-7.2^5 \right] \)
16) \( (6.5^2-13.7).2-2^3(7+3) \)
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**Bài 24. Tìm số tự nhiên x, biết:**
1) \( 5.2^2 + (x+3) = 5^2 \)
2) \( 2^3 + (x-3)^2 = 5^3 - 4^3 \)
3) \( 3^3 - (x + 4) = 7 \)
4) \( 7^2 - (15+x) = 5.2^2 \)
5) \( 4(x-5) - 2^3 = 2^4 \)
6) \( 2^4 - 2(15-x) = 10 \)
7) \( 5(x+7) - 10 = 2^3.5 \)
8) \( 7^2 - 7(13-x) = 14 \)
9) \( 5x - 5^2 = 10 \)
10) \( 14x - 2.7^2 = 2.3.7 \)
11) \( 9x + 2.3^2 = 3^4 \)
12) \( 10x + 2^2.5 = 10^2 \)