6а³-6а=6а(а²-1)=6а(а-1)(а+1)
5х³-5ху²=5х(х²-у²)=5х(х-у)(х+у)
4a^2-8a-a^2-16+8a=3a^2-16..................................
1/2x^-1/2=1/6x^+5/6x 1/3x^-5/6x-1/2=0 D=(-5/6)^-4*1/3*(-1/2)=49/36 X1,2=5/6+-7/6/2*1/3 X1=3 X2=-1/2
81x^5 - x^3 = 0
x^3(81x^2 - 1) = 0
x^3(9x - 1)(9x + 1) = 0
x^3 = 0
x = 0
9x - 1 = 0
9x = 1
x = 1/9
9x + 1 = 0
9x = - 1
x = - 1/9
Ответ:x1 = 0, x2 = 1/9, x3 = - 1,9.