(Корень5-3)^2-2•(4-3•корень 5)=2-2•2корень1,5=-2корень1,5
Ответ:
1) (64/х + 138) - 50 = 90
64/х + 138 = 90 + 50
64/х + 138 = 140
64/х = 140 - 138
64/х = 2
х = 64/2
х = 32
2) 925 - (80/х - 15) = 900
80/х - 15 = 925 - 900
80/х - 15 = 25
80/х = 25 + 15
80/х = 40
х = 80/40
х = 2
3) (95 - 45/х) * 9 = 810
95 - 45/х = 810/9
95 - 45/х = 90
45/х = 95 - 90
45/х = 5
х = 45/5
х = 5
4) 6 * (20/х - 15) = 30
20/х - 15 = 30/6
20/х - 15 = 5
20/х = 15 + 5
20/х = 20
х = 20/20
х = 1
5) (3х - 30)/2 = 68 - 8
(3х - 30)/2 = 60
3х - 30 = 60 * 2
3х - 30 = 120
3х = 120 + 30
3х = 150
х = 150/3
х = 50
6) 720/(4х - 46) = 150 * 3 - 90
720/(4х - 46) = 360
4х - 46 = 720/360
4х - 46 = 2
4х = 46 + 2
4х = 48
х = 48/4
х = 12
1)9
2)9
3)13
4)13
5)32
6)32
7)9
8)9
9)42
10)42
Ответ:
(2+1/4)+(3+1/8)+1/16 = 5+1/4+1/8+1/16 = 5+7/16
Пошаговое объяснение:
1/4 = 4/16
1/8 = 2/16