X+y=3
x=3-y
(3-y)^4+y^4=17
81-108y+57y²-12y³+y^4+2y^4-17=0
2y^4-12y³+54y²-108y+64=0
2y³(y-1)-10y²(y-1)+44y(y-1)-64(y-1)=0
(y-1)(2y²-10y²+44y-64)=0
(y-1)[2y²(y-2)-6y(y-2)+32(y-2)]=0
(y-1)(y-2)(2y²-6y+32)=0
y-1=0
y=1⇒x=3-1=2
y-2=0⇒x=3-2=1
2y²-6y+32=0
D=36-256=-220<0 нет решения
Ответ (1;2);(2;1)
А=13 b=16 -b=-16
13-(-16)=13+16
13-16=-3
1.<span>81-27/27*54 = 54/27*54=1/27
2.</span><span>(11+88)*12/11*60= 99/11*5= 9/5= 1.8</span>
Ответ:
Пошаговое объяснение:
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1)3-2/3=7/3=2 1/3
2)5-5/6=25/6=4 1/6
3)11-3/7=74/7=10 4/7
4)10-2/9=88/9=9 7/9
5)8-8/11=80/11=7 3/11
6)4-12/13=40/13=3 1/13