1) 3, 8, 15, 24, 35, 48, 63, 80
2) 2, 5, 4, 7, 6, 9, 8, 11, 10, 13, 12, 15, 14, 17, 16, 19, 18, 21, 20, 23, 22, 25, 24, 27, 26, 29, 28, 31, 30, 33, 32.
1) D=b^2-4ac=4^2-4×1×(-12)= 16+48=64=8
x1=-4+8/2=4/2=2
x2=-4-8/2=-12/2=-6
Ответ : -6;2.
Второе не знаю,сори)
<span>14,64+2,76 = 17,4
------------------------</span>
<span>4 4/17•37/18=72/17*37/18=148/17=8 12/17
</span><span>5,5/8•1,5/36=44*54=2376</span>