Răspuns:
Explicație pas cu pas:
1)
=2²/5²=4/25
2)
12⁽²/16⁽²=6⁽²/8⁽²=3/4
3)
=(7*4+5)/4=33/4
4)
= (3+4+5)/11
= 12/11
5)
=⁴⁾ 4/3-7/12
=(16-7)/12=9⁽³/12⁽³=3/4
6)
=20⁽¹⁰/10⁽¹⁰=2
7)
=7⁽⁷/6⁽²*22⁽²/21⁽⁷=11/9
8)
4⁽⁴/7⁽⁷*21⁽⁷/36⁽⁴=3⁽³/9⁽³= 1/3
9)
=24/100⁽¹⁰⁰*1500⁽¹⁰⁰
=24*15
=260
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10)
=75:4=3³/₄
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ll
1)
=3/4 : (3/4-²⁾1/2)-4/9
=3/4: (3/4-2/4)-4/9
= 3/4:1/4-4/9
= 3/4⁽⁴*4⁽⁴/1-4/9
= ⁹⁾3-4/9
=27/9-4/9
= 23/9
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2)
a)
= (7/3)⁵⁺⁴ :(7/3)⁶
= (7/3)⁹:(7/3)⁶
= (7/3)⁹⁻⁶
= (7/3)³
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b)
=(5⁽⁵/13⁽¹³)²*(26⁽³/15⁽⁵)² :( 2/5)²
=( 2/3)²:(2/5 )²
= 4/9:4/25
=4⁽⁴/9* 25/4⁽⁴
= 9/25
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c)
=11⁽¹/25 *24/7⁽⁷*21⁽⁷/22⁽¹¹+( 16/7+8/7)*7/6
= 3+24/7⁽⁷*7⁽⁷/6
=3+24/6
=3+4
=7
3)
40/100*300=120 (în prima zi )
300-120= 180 (restul)
4/5*180=4*36=144 (a doua zi )
300- (120+144)=36 ( a treia zi )
