Решите . 9х^2 - 64 = 0 33x^2 - 22x = 0

9x^2 =64

x^2=64/9

x=8/3

33x^2-22x=0

11x(3x-2)=0

x=0

x=2/3

9х^2-64=0

D=0^2-4*9*(-64)=2304

x1=48/(2*9)=8/3
x2=-48/(2*9)=-8/3

33x^2-22x=0

D=(-22)^2-4*33*0=484

x1=(22-(-22))/(2*33)=44/66=2/3

x2=(-22-(-22))/(2*33)=0