Question

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Ex:3 de la testul unu și doi
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ex conplet va rog nu doar răspuns

Answer 1

Răspuns:

ex 3 de la testul 1

3.a)12³⁴:12³²-3¹×3²+2³=

12²-3³+8=

144-27+8=

117+8=125

b)2³×3²+25⁰×11²-4⁰=

8×9+1×121-1=

72+120=192

c)1+{2+[3×(4+5)-6+7×8]-9}=

1+{2+[3×9-6+56]-9}=

1+{2+[27-6+56]-9}=

1+{2+[21+56]-9}=

1+{2+77]-9}=

1+{79-9}=

1+70=71

d)9×{[8+7×(6+5)]×4-3}+2=

9×{[8+7×30]×4-3}+2=

9×{[8+210]×4-3}+2=

9×{218×4-3}+2=

9×869+2=

7.821+2=7823

ex 3 de la testul 2

3.a)3⁵¹:3⁴⁸+23¹×3³+1220⁰=

3³+23×81+1=

27+1.863+1=1.891

b)3⁴×7²+22¹×10³-154¹=

81×49+22×1000-154=

3.969+22000-154=

25.969-154=25.815

c)13-3×[7-2×(5-3)]=

13-3×[7-2×2]=

13-3×3=

13-9=4

d)12×{110-10×[9×8-9×(15-8)]}=

12×{10×[72-9×3]}=

12×{10×[72-27]}=

12×{10×45}=

12×450=5.400