x^2+5x-2.5=0

Simple and best practice solution for x^2+5x-2.5=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 x^2+5x-2.5=0 equation: 



x^2+5x-2.5=0

a = 1; b = 5; c = -2.5;
Δ = b2-4ac
Δ = 52-4·1·(-2.5)
Δ = 35
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{-(5)-\sqrt{35}}{2*1}=\frac{-5-\sqrt{35}}{2}
$


$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(5)+\sqrt{35}}{2*1}=\frac{-5+\sqrt{35}}{2}
$

See similar equations:

| 21=c/10+ 20 | | 4(7-1/8x=11 | | 21=c10+ 20 | | 39=h/11 | | (5x-7)+(2x+3)+(x)=180 | | 3=x-5.5 | | −3i+0.5(12i−6)+2i=21​ (2+10i)−4 | | {3}{7}x-16=-4 | | 2/3x=14/3 | | P=429-(39x9) | | 5u^2+10=70 | | 18q+–6q=–12 | | h-10=11 | | 3x+31+135+5x-4+7x-64+120+6x-8+4x+15=900 | | C=4(y-1) | | x2+576=625 | | 3x-8+10x=4x+4 | | 4bb=7 | | 9 | | b=74b | | 4(x+7)=384(x+7)=384(x+7)=38 | | 9 | | V=6.5x5.2x4.3/3 | | 45=4x+2 | | 8/3=3(c+5/8) | | 21x=6x28 | | 3x+-4=137 | | 64+x2=289 | | u/13=5/3 | | 9=(45)(2)r | | 15d=15 | | x3=-0.027 |

Equations solver categories