4x^2-7x-2.5=0

Simple and best practice solution for 4x^2-7x-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 4x^2-7x-2.5=0 equation: 



4x^2-7x-2.5=0

a = 4; b = -7; c = -2.5;
Δ = b2-4ac
Δ = -72-4·4·(-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*4}=\frac{7-\sqrt{89}}{8}
$


$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-7)+\sqrt{89}}{2*4}=\frac{7+\sqrt{89}}{8}
$

See similar equations:

| 7x=x^2+18 | | 3+4g=2.3 | | 9z+7=10z | | 5(3(x+4)-2(1-x)-x-25=14x+45 | | 11q-5q=18 | | 7/20x+3/28=4/35 | | 4+v/4=-6.24 | | 9t+16=7t | | 12+9q=8q | | 7(3x-4)=21x | | 26=v/4+14 | | (x-8)/(x+2)=0 | | (3x+25)+2x=18 | | (3x-25)+2x=90 | | 9/8x=72 | | u+74u=2 | | 11(b+18)-6(-2b+1)=4(-b+9) | | (x+3)^2-81=0 | | 4/5x+1/3=3 | | 2x+1=1-x | | 9(2-3x)=45 | | 3x-1+x+16=180 | | 39.99a+0.45=49.99a+0.40 | | 7k-4=5k+16= | | 6y-9+2y-5=-8y+17+4y | | 14x+6=12x+12 | | x³+27x+1=0 | | 7m+35=5+2m | | 23=-13v | | -2/3x+3/5=1/2 | | 1/10w+2/5(1/2w)=w | | 10x+48=0 |

Equations solver categories