If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( a )
a^2-(6*a)+9 = 0
a^2-(6*a)+9 = 0
a^2-(6*a)+9 = 0
a^2-6*a+9 = 0
a^2-6*a+9 = 0
DELTA = (-6)^2-(1*4*9)
DELTA = 0
a = 6/(1*2)
a = 3 or a = 3
a in (-oo:3) U (3:+oo)
(a^2-(4*a)+3)/(a^2-(6*a)+9) = 0
(a^2-4*a+3)/(a^2-6*a+9) = 0
a^2-4*a+3 = 0
a^2-4*a+3 = 0
DELTA = (-4)^2-(1*3*4)
DELTA = 4
DELTA > 0
a = (4^(1/2)+4)/(1*2) or a = (4-4^(1/2))/(1*2)
a = 3 or a = 1
(a-1)*(a-3) = 0
a^2-6*a+9 = 0
a^2-6*a+9 = 0
DELTA = (-6)^2-(1*4*9)
DELTA = 0
a = 6/(1*2)
a = 3 or a = 3
(a-3)^2 = 0
((a-1)*(a-3))/((a-3)^2) = 0
( a-1 )
a-1 = 0 // + 1
a = 1
( a-3 )
a-3 = 0 // + 3
a = 3
a in { 3}
a = 1
| 5*n*2=0 | | 4-(9w-20)+4w=12(w+5)+13 | | 2x^2+16x=-8 | | 7-3b=28 | | -(6-7a)-(12+6a)-18=-(5-7a)+(-a)+4 | | 1p=-10 | | 9/5x+4/5-8=5.4 | | -6=1z | | 5(g-8)-7=103 | | x+32=13 | | -6(-7a)-(12+6a)-18=-(5-7a)+(-a)+4 | | m^2-64=12m | | -180+12x=-5x+58 | | 17u+12-3(5u-4)=3+3(u+7) | | -6w-8z= | | 92-4x=32x+24 | | 10.6+(-4x)=-1.4 | | 180+12x=-5x+58 | | 6x-1+5x+17=126 | | 2x+98=180 | | -3x-1.2=0.9 | | -7m+6-9(m-2)=2m-(9m-8)-4m+1 | | H-8=15 | | 4x^2-29x+25=-9x+4 | | (-3)2x(-10)2= | | 1(x-6)=1-x | | 7n*8n= | | -[2z-(13z+6)]=6+(10z+3) | | x^3-7x^2+16x+4=0 | | 3y+13y+8=52 | | ln(x^2+4)=0 | | x-(-4)= |