If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-x2+7x-5=0
We add all the numbers together, and all the variables
-1x^2+7x-5=0
a = -1; b = 7; c = -5;
Δ = b2-4ac
Δ = 72-4·(-1)·(-5)
Δ = 29
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{-(7)-\sqrt{29}}{2*-1}=\frac{-7-\sqrt{29}}{-2} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(7)+\sqrt{29}}{2*-1}=\frac{-7+\sqrt{29}}{-2} $
| X^4-5x^2+48x-36=0 | | x-4/21=6/7=x-7/14 | | 90+4x+5x-27=180 | | 2x-0,3=1 | | 56-x+3x=41 | | -2v-47=5(v-8) | | x^2+1+3x+3+2=0 | | x²+1+3x+3+2=0 | | -15x-26=-11+54 | | 5x+13Y=68 | | 9-3(8x+8)=7 | | 1(9x+3)/3=3x+1 | | -3(w+8)=-5w-38 | | 2(4x+5)-6=36 | | t-13=7;{10,13,17,20} | | 22x+3=8 | | a/6-6=16 | | 12y2+7y-1=0 | | 6x^2+3^x=1296 | | 2d=-9+3d | | -2w-16=3(w+8) | | 8p^2+26p+15=12 | | x^2-3x+2.25=-2.25 | | 53x-1+21x+1+32=180 | | 15+3v=0 | | -40=12x+98 | | 10+8t=6t-10 | | 3/2(b-1)=3 | | 2(4-2x)=15 | | -9-2y+14=0 | | 75x+49+55x+1=180 | | -12=3(y+6)+3y |