If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
x^2+2*x-15 = 0
x^2+2*x-15 = 0
x^2+2*x-15 = 0
x^2+2*x-15 = 0
DELTA = 2^2-(-15*1*4)
DELTA = 64
DELTA > 0
x = (64^(1/2)-2)/(1*2) or x = (-64^(1/2)-2)/(1*2)
x = 3 or x = -5
x in (-oo:-5) U (-5:3) U (3:+oo)
(((x^2+17*x+70)*(x^2-(2*x)-3))/(x^2+2*x-15))*(x^2+8*x-20) = 0
(((x^2+17*x+70)*(x^2-2*x-3))/(x^2+2*x-15))*(x^2+8*x-20) = 0
((x^2+17*x+70)*(x^2-2*x-3)*(x^2+8*x-20))/(x^2+2*x-15) = 0
x^2+17*x+70 = 0
x^2+17*x+70 = 0
DELTA = 17^2-(1*4*70)
DELTA = 9
DELTA > 0
x = (9^(1/2)-17)/(1*2) or x = (-9^(1/2)-17)/(1*2)
x = -7 or x = -10
(x+10)*(x+7) = 0
x^2-2*x-3 = 0
x^2-2*x-3 = 0
DELTA = (-2)^2-(-3*1*4)
DELTA = 16
DELTA > 0
x = (16^(1/2)+2)/(1*2) or x = (2-16^(1/2))/(1*2)
x = 3 or x = -1
(x+1)*(x-3) = 0
x^2+2*x-15 = 0
x^2+2*x-15 = 0
DELTA = 2^2-(-15*1*4)
DELTA = 64
DELTA > 0
x = (64^(1/2)-2)/(1*2) or x = (-64^(1/2)-2)/(1*2)
x = 3 or x = -5
(x+5)*(x-3) = 0
x^2+8*x-20 = 0
x^2+8*x-20 = 0
DELTA = 8^2-(-20*1*4)
DELTA = 144
DELTA > 0
x = (144^(1/2)-8)/(1*2) or x = (-144^(1/2)-8)/(1*2)
x = 2 or x = -10
(x+10)*(x-2) = 0
((x+10)^2*(x+7)*(x+1)*(x-3)*(x-2))/((x+5)*(x-3)) = 0
( x+10 )
x+10 = 0 // - 10
x = -10
( x+1 )
x+1 = 0 // - 1
x = -1
( x+7 )
x+7 = 0 // - 7
x = -7
( x-2 )
x-2 = 0 // + 2
x = 2
( x-3 )
x-3 = 0 // + 3
x = 3
x in { 3}
x in { -10, -10, -1, -7, 2 }
| 4x-30=9x | | x-6=8/x+x+3 | | (9/(x^2-1))+(12/(3x+3)) | | x/3=((x-3)/2) | | 25+x=25 | | 2sin^2x-sinx-1=0 | | (15x+2)/(x^2+6) | | x^2/(x+4)^2=25 | | (x^2+17x+70)*(x^2-2x-3)/(x^2+2x-15)(x^2+8x-20) | | x^5-4x^3+8=32 | | 6m-2[2+4m]=3m | | 20=4(a)+5(b) | | (T-4)(T+5)= | | 5+7y-12/3=y+13 | | X-2.666=0.5 | | 1.5x^2-25x-76=0 | | sinx=-cosx | | y=-3x+19 | | ((x-4)/5)-1=((x-12)/6) | | 8=-16t^2+96t+116 | | (4x/3)-x=(x/15)-(8/5) | | 7*5*5+2*1= | | 4x^3+16x^2+12x= | | -1/2x^2-1/2x+1=0 | | ((12x+12)/(8x+32))*((2x+8)/(4x^2-4))=0 | | 75*5+2*1= | | ln(x-8)-ln(x+8)=0 | | (3y/4)-5=(y/2)+4 | | y^2-2=34 | | (30-7)2= | | 3/4(2h+17)-5/4(h-1) | | 3x+4+4x+2=90 |