1)3^12
2)4^3
3)2^6
4)-
5)а^14
2x-x²+3=0
-x²+2x+3=0
x²-2x-3=0
D=b²-4ac=(-2)²-4*1*(-3)=4-4*(-3)=4+12=16=4^2
x₁=2+4/2=3
x₂=-2-4/2=-1
У =(1/3)*x -6 .
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а)
2/3 =(1/3)*x -6 ;
2 =x -18 ;
x =20.
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-0,5 =(1/3)*x -6 || *6 ;
-6*0,5 =1/3)*x*6 - 6*6 ;
-3 =2x -26 ;
x =16,5 .
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б)
y =x .
x =(1/3)*x -6 ;
3x =x -18 ;
x = - 9 . точка A(-9 ;9).
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в) x = -8.
y = 1/3)*x -6 ;
y = 1/3)*(-8) -6 ;
y = -8/3 -6 ;
y = -26/3. || - [8] (2/3) .
-3(х+2)-9=-30
-3x-6-9=-30
-3x=-15
x=5