22.8	e) ExpToTrig[e^(i*(pi*(1/4)))-e^(i*(pi*(-1/4)))]
	f) ExpToTrig[2*e^(i*(pi*(1/4)))/(e^(i*(pi*(-3/4))))]

23.4	(-64)^(1/4)

24.1 	a) z_1 = 3*e^(i*(pi/3))
	d) z_4 = 2*e^(i(-pi/3))
	   z_1 + z_4 = (3*e^(i*(pi/3))) + (2*e^(i(-pi/3)))
	   z_1 * z_4 = (3*e^(i*(pi/3))) * (2*e^(i(-pi/3)))
	   z_1 / z_4 = (3*e^(i*(pi/3))) / (2*e^(i(-pi/3)))
		

24.2	a) (4*e^(i*(-pi/3)))^5+(sqrt(3)*e^(i*(3pi/2)))^8
	c) ( (sqrt(2)*e^(i*(5pi/4))) * (2*e^(i*(2pi/3))) )^5
	d) ( (4*e^(i*(-pi/3))) + (2*e^(i*(2pi/3)))^2 )^(1/3)
	e) ( (4*e^(i*(-pi/3))) + (sqrt(3)*e^(i*(3pi/2))) )/(2*e^(i*(2pi/3)))
	f) ( (2*e^(i*(2pi/3))) )^(1/4)/ (sqrt(3)*e^(i*(3pi/2)))
	h) |( (4*e^(i*(-pi/3))) )^3 + (sqrt(2)*e^(i*(5pi/4)))^2|
	i) |( Conjugate[(2*e^(i*(2pi/3)))] ) / (sqrt(3)*e^(i*(3pi/2)))|

24.3	a) 1^(1/4)
	b) (1+i)^(1/2)
	d) (1/sqrt(2)+i/sqrt(2))^(1/2)
	e) (-2(1+sqrt(3)i))^(1/2)
	f) (-i)^(1/3)
	g) (-27)^(1/3)
	h) (i)^(1/4)
	i) (sqrt(3)+i)^(1/4)
	k) solve x^2-6x+10=0
	l) solve x^3-3x^2+3x-28=0
	m) solve x^4+6x^2+8=0
	n) (1-2i)^(1/3)
	o)  	(x+1)/(x-1) where x = 2
		(x+1)/(x-1) where x = -2
		(x+1)/(x-1) where x = 2i
		(x+1)/(x-1) where x = -2i
		(x+1)/(x-1) where x = sqrt(2)+i*sqrt(2)
		(x+1)/(x-1) where x = -sqrt(2)+i*sqrt(2)
		(x+1)/(x-1) where x = +sqrt(2)-i*sqrt(2)
		(x+1)/(x-1) where x = -sqrt(2)-i*sqrt(2)
	p) solve x^3+2x^2+2x+4=0

24.4	(8i)^(1/4)

24.5	1 + [n (mod 2)] reaalset juurt