.5x^2-7x+20=0

Simple and best practice solution for .5x^2-7x+20=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 .5x^2-7x+20=0 equation: 



.5x^2-7x+20=0

a = .5; b = -7; c = +20;
Δ = b2-4ac
Δ = -72-4·.5·20
Δ = 9
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{9}=3$


$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-7)-3}{2*.5}=\frac{4}{1}
=4
$


$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-7)+3}{2*.5}=\frac{10}{1}
=10
$

See similar equations:

| 16-2y+4y=10 | | 7(x+3)=7(×-4) | | 8y–3=189 | | B) 8y–3=189 | | 6=x/3+2 | | 3^×=9^x-1 | | x2–2x–3=0 | | 4x+5÷x=5(x-9) | | 2^x-1=2^4 | | 4+2y-5y=2y+16+8 | | 3(1.17x)=7(1.08x) | | 3-5p=2p-11 | | 0.66(x+6)-0.25(x-5)=108 | | 8x0.5= | | 144+11y=210 | | 7x-9x+4x=-8-4x | | 2x+8-20=10 | | -13=0.666x | | D9(d+3)=4(d-7)+5 | | 5x2+35x=0 | | 23-x=14x+2x | | -2.6x=-78 | | -8x+8=-2x+32 | | 4x2+20=0 | | x–39=7 | | 3x-35=-5x+21 | | 3x2-7x+2=0 | | s/1.5=0 | | |x^2+4|=29 | | (2x−9)+(27−4x)=180 | | 2x−9+27−4x=180 | | 4+8t=12 |

Equations solver categories