(0,6+1/3)/(2-4 2/3)=
1. 3/5+1/3=3*3/15+5*1/15=9/15+5/15=14/15
2. 2-4 2/3= 1 3/3-4 2/3= 3 5/3-1 3/3=-2 2/3
3. 14/15/(- 2 2/3)= 14/15 *(-3/8)=7/20=0,35
3x^2-2x-x^2+3x
2x^2+x
X(2x+1)
X=0 x=-0,5
Cos(60-α)= cos60 * cosα + sin60 * sinα=A
cos60=1/2
sin60=√3/2
cosα=-0.5
sinα=√3/2
A=1/2 * (-0.5) + √3/2 * √3/2=-1/4 + 3/4=2/4=1/2
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A) f(x)=2x²-x
2x²-x=0
2x(x-0,5)=0
x1=0
x2=0,5
g) 2x-5x²=0
-5x(x-0,4)=0
x1=0
<span>x2=0,4</span>