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-(3*x)-70 = 0
x^2-(3*x)-70 = 0
x^2-(3*x)-70 = 0
x^2-3*x-70 = 0
x^2-3*x-70 = 0
DELTA = (-3)^2-(-70*1*4)
DELTA = 289
DELTA > 0
x = (289^(1/2)+3)/(1*2) or x = (3-289^(1/2))/(1*2)
x = 10 or x = -7
x in (-oo:-7) U (-7:10) U (10:+oo)
45/(x^2-(3*x)-70) = 0
45/(x^2-3*x-70) = 0
x^2-3*x-70 = 0
x^2-3*x-70 = 0
DELTA = (-3)^2-(-70*1*4)
DELTA = 289
DELTA > 0
x = (289^(1/2)+3)/(1*2) or x = (3-289^(1/2))/(1*2)
x = 10 or x = -7
(x+7)*(x-10) = 0
45/((x+7)*(x-10)) = 0
45 = 0
x belongs to the empty set
x belongs to the empty set
| 1/2×=50 | | 44=-2(4y+2) | | 4t^3-15t=0 | | 21.7+2(3x+4)=3 | | j/25=20 | | Y=.333(-.5)-.333 | | 4x+10=4x+4 | | 4/5x-10=30 | | (6x-4)/4 | | -5(2x+4)=40 | | m=-h^2+4qh | | -13=-y-7 | | 6x+60=20 | | 8x+y=8.4 | | 0.59x+45=1.09x | | 5n-11=3n+6 | | -3=t+17 | | 0.59x+42=1.29x | | -3p^2+10p+8=0 | | 3/8(16x-48)+3x=0 | | 0.59x+42=1.29 | | q=WD/162 | | 15=-2(2t-1)+3 | | -2×1/2 | | lnx^2+2x=3 | | 2h+9=29 | | 3log(x+20)=6 | | 9=78/x | | 6s^3-5s^2-6s=0 | | 18[5-(4-x)]+14x=4(8x+5)-2 | | 4/7k-1/3=1/5 | | -5u^2-5u-2=0 |