2x2-7x-5=0

Simple and best practice solution for 2x2-7x-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 2x2-7x-5=0 equation: 



2x^2-7x-5=0

a = 2; b = -7; c = -5;
Δ = b2-4ac
Δ = -72-4·2·(-5)
Δ = 89
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{89}}{2*2}=\frac{7-\sqrt{89}}{4}
$


$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-7)+\sqrt{89}}{2*2}=\frac{7+\sqrt{89}}{4}
$

See similar equations:

| -15+x=30 | | -4(x-6)=2x-8 | | 0.2q^2+Ñ-30q-10=0 | | 63x^2-32x=0 | | 100+x+2x=580 | | -6+1/8x=-4 | | (x+3)/4=(x-2)/6 | | 7x^-5x=0 | | -1=1/2x+9 | | -0.2q^2+30q+10=0 | | 3w+w=32 | | x+3/4=x-2/6 | | 26-2x=2x=2 | | 4x+0.02=11.98 | | (x+-8)=(3x+13) | | 4+(-2)=x | | 18=2/3x+8 | | (x-2)/(2x+3)=-3 | | 7,5x=2,25x+27 | | 5x-x+0.02=11.98 | | (x+2)/2=x-7 | | 4x+7=80x= | | 3x+6+x+6=2x | | -3/4x-2=0 | | x=-4+1/3 | | 4-2x+3+5x=2-8 | | j-907=-890 | | 3(y+5)–2=31 | | x=-1/15 | | 15x+3=30 | | -1/3x+3=8 | | 3(x-6)=5(x+4) |

Equations solver categories