If it's not what You are looking for type in the equation solver your own equation and let us solve it.
X2-X-4=0
We add all the numbers together, and all the variables
X^2-1X-4=0
a = 1; b = -1; c = -4;
Δ = b2-4ac
Δ = -12-4·1·(-4)
Δ = 17
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$X_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$X_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$X_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-1)-\sqrt{17}}{2*1}=\frac{1-\sqrt{17}}{2} $$X_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-1)+\sqrt{17}}{2*1}=\frac{1+\sqrt{17}}{2} $
| 4(x-6)-3(x-5)=-12 | | 1y+1y=200 | | 12x+-10x=4 | | -1/5x=-2x-3/5 | | 6-4(-6x-8)=2 | | 24.95+0.32x=4+150x | | 7+65x=52+9 | | x=4. | | -6(x-8)=-9(x+8) | | 70-2x=68 | | 0y+y=3000 | | m-48=105 | | 7a+2a+2a-3a=16 | | 7x-2(3x-1)-3=15 | | 10.3x+1=3(1x-1)+4 | | -1/7y=-4 | | -6(w+5)=24 | | -7/4x+4-5/4x-3=7 | | 10y-5y-7=65.55 | | 4y=-11y+45 | | x^2/0.01-x=0 | | 20q-12q-4q=4 | | -3x=-1/2x+1/2 | | 1/8(-1/5x+4)=-5 | | 10p-9p=9 | | 3/x=1/15 | | 4(5x+5)=2x-6 | | u/2-5=3 | | 5(x-8)-2x=41 | | -5-6=-3x-3+4x | | -272=8(1+7k) | | 3(2x+7)=26+17 |