If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-2x^2-7x-5=0
a = -2; b = -7; c = -5;
Δ = b2-4ac
Δ = -72-4·(-2)·(-5)
Δ = 9
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$\sqrt{\Delta}=\sqrt{9}=3$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-7)-3}{2*-2}=\frac{4}{-4} =-1 $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-7)+3}{2*-2}=\frac{10}{-4} =-2+1/2 $
| 7(3x+6)=12-(x+2) | | X=10x+9x+8+8x+10 | | 22-5g=18 | | 7k+4-9k=36 | | 0.5x+2/3=x-4/3 | | 400+0.20x=500+0.15x | | 18-3b=0b= | | 0.5n4.5=0.5n | | 144+(.10*y)=y | | -3(x-8)-(x-5)=23 | | -6y+9y=15 | | 4x-7=-6x+13 | | 2n-4=7n+36 | | 3x-9=2×+2 | | 0.31(y-2)+0.03y=0.04y-0.50 | | x-12=-36* | | 4y-55=69 | | 18+2y=1 | | -6r-2r=24 | | -17=5k+8 | | 10x+9x+8+8x+10=x | | n-51=72 | | 2(y+5)=11 | | x2=1/36 | | 12/9=x-12/x+12 | | 29-4x=-7(1-2x) | | -6r-2r=24* | | 4t=2+3t | | 8n+15=1n-6 | | 15+9f=5(8f-2) | | 5x-10=-16 | | 3.5+0.5p=12 |