-5+x+x^2=0

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



-5+x+x^2=0

a = 1; b = 1; c = -5;
Δ = b2-4ac
Δ = 12-4·1·(-5)
Δ = 21
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{21}}{2*1}=\frac{-1-\sqrt{21}}{2}
$


$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(1)+\sqrt{21}}{2*1}=\frac{-1+\sqrt{21}}{2}
$

See similar equations:

| y=3(2y+5)/8(y-1) | | 100+.8x=40+.9x | | 57=12−5v | | -70=2(1-8m)-8m | | 5x²-16x+15=0 | | A=-l^2+10l | | (5x)3=52(1+x) | | 2g+3.50g=5g+3.25 | | 5+|7p-5|=17 | | 28,000+3,000n=36,000+2,000;n | | -(n-7)=n+9 | | y=8.49 | | -83=4(5x-7)+5 | | 6x+154=168 | | 18k−4=38k+4 | | x^2-4x-86=90 | | 6=c/15 | | 1n^2-4n-5=4n | | 8y-7=3y-4 | | 6x+1.5=8x | | 3/x=16/24 | | 4x+2x-5=7x-5 | | y=3(2y+5) | | 4(x+8)-2=2(2x+15) | | 6+3y=24+1y | | 10(m+3)+8m=84 | | 2(x+2)+1=4x+5 | | 34-18x+2x^2=0 | | 1/49=x^-2 | | T(h)=30.5-2.5h | | 12/6=2/x | | 8-9d=5d-8d-4 |

Equations solver categories