s^2+7s-1=0

Simple and best practice solution for s^2+7s-1=0 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for s^2+7s-1=0 equation: 



s^2+7s-1=0

a = 1; b = 7; c = -1;
Δ = b2-4ac
Δ = 72-4·1·(-1)
Δ = 53
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$s_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$s_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$s_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(7)-\sqrt{53}}{2*1}=\frac{-7-\sqrt{53}}{2}
$


$s_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(7)+\sqrt{53}}{2*1}=\frac{-7+\sqrt{53}}{2}
$

See similar equations:

| 2x/7-3/7=3x/10-5/10 | | 6b+4b=13 | | 5t+8=0 | | 5x+8(×+1)+3=11-4× | | 5.2+u/8=-7.6 | | 6x–3=27 | | 1.81=m-15.1.3 | | 2a+4=6+8a | | 3t+1=7t+5 | | 8-7t=-13 | | 24=m+13 | | (2.44+2x)(2.44+2x)=0 | | 4(x-9)=108÷9 | | K=3n+2/n-1 | | 4.9x-14.74=7.8 | | 6(x)-50=x+5 | | p+13=6p-27 | | -4x-5=5x+4(-4x+6)+6 | | -5.6(x-1.75=11.2 | | -5(v+5)=-3v-13 | | 18=3/5v | | 19-k=4k= | | 1.4(x+1)=0.2(x+3) | | 30-x=2(x+6) | | x+.07x=8106 | | 5a-120=360 | | 3(x-2)=2(x-1)-2 | | 15.96y=16y | | 8v-v=14 | | 3(x+1)-2=6x-3(-1+x | | 25x^2+20x+16=0 | | 10c+20=360 |

Equations solver categories