А-1 (у=5/х - гипербола)
Б-3 (у=х²-3 - парабола)
В-2 (у=-1/5 *х -5 - прямая)
<span>2 целых 2/11×7/8:7/11= 24/11 * 7/8 * 11/7 =
24 * 7 * 11 24
= --------------------- = ---------= 3
11 * 8 * 7 8
-------------------------------------------------------------------------------------------------
</span><span>3 целых × 4 целых 7/8:13/16 = 3/1 * 39/8 * 16/13 =
3 * 39 * 16 3 * 13 * 8 * 2
= ------------------- = ------------------- = 3 * 2 = 6
1 * 8 * 13 13 * 8
----------------------------------------------------------------------------------------
</span><span>1 целая 1/3×2 целых 2/3:4/9 = 4/3 * 8/3 * 9/4 =
4 * 8 * 9
= ----------------- = 8
3 * 3 * 4
---------------------------------------------------------------------------------------------
</span><span>6 целых ×1/2:3 целых 2/15 = 6/1 * 1/2 : 47/15 = 6/2 * 15/47 =
6 * 15 2 * 3 * 15 3 * 15
= ------------ = ---------------- = ------------ = 45/47
2 * 47 2 * 47 47
--------------------------------------------------------------------------------------------
</span><span>8 целых 1/3×1 целая 5/7: 2 целых 8/21 = 25/3 * 12/7 : 50/21 =
25/3 * 12/7 * 21/50 =
25 * 12 * 21 25 * 2 * 6 * 3 * 7
= ------------------- = ------------------------- = 6
3 * 7 * 50 3 * 7 * 25 *2
---------------------------------------------------------------------------------------------
</span><span>1 целая 5/6×3 целых 3/5:2 целых 1/5 = 11/6 * 18/5 : 11/5 =
11/6 * 18/5 * 5/11 =
11 * 18 * 5
= ------------------ = 18/6 = 3
6 * 5 * 11</span>
(а²-1)²=(a²)²-2*a²*1+1=a⁴-2a²+1
(x²-y²)²=(x²)²-2*x²*y²+(y²)²=x⁴-2x²y²+y⁴