If it's not what You are looking for type in the equation solver your own equation and let us solve it.
(-x)^2-(3*x)+10 = 0
65;5
2*x^2+x+1 = 0
x^2-(4*x)+4 = 0
4*x^4+3*x^2+0*x^3+0*x-1 = 0
| X+0y=1 | | (x-4)(3-x)=0 | | 16-8x=25 | | 15x-20=6x-(x+2)-(x+3) | | (4+7i)(4-7i)= | | 10y-7=7 | | -12=6x+18-9y | | 5a+15b=5 | | 4a-32=16 | | (2x-1)(x+3)=(x+7)(3-4x) | | -51=3u-15u-16 | | 15x+6=81 | | 17,164/X=.39 | | X-x-1/2=1-x-2/3 | | -23=3x+9-11 | | X^2-6x-792=0 | | 36=5x-x | | 1.47=1+x^5 | | 6x+42=50 | | x+1.6x=52 | | 10*20x=200 | | 10*20=200 | | 30x*2=50 | | x^2-140=4 | | 2cosx+3cosx=0 | | 7x+12=8x+9 | | N-10=0.5n | | (3x+1)(x-4)-5(x-4)=0 | | X(2)=-4500 | | (X)(10)-1=30 | | (X)10-1=30 | | 250=√(1/4*R) |