4x2+7x-4=0

Simple and best practice solution for 4x2+7x-4=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 4x2+7x-4=0 equation: 



4x^2+7x-4=0

a = 4; b = 7; c = -4;
Δ = b2-4ac
Δ = 72-4·4·(-4)
Δ = 113
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{113}}{2*4}=\frac{-7-\sqrt{113}}{8}
$


$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(7)+\sqrt{113}}{2*4}=\frac{-7+\sqrt{113}}{8}
$

See similar equations:

| 7000=3966(1+r9) | | 2x²+24x-320=100 | | 2x²+24x-320=1 | | 2x²+24x-320=0 | | 11^-5x=6 | | x²+12x-160=0 | | 140=2(x)/20 | | 2x+1/3-7=x/ | | 3/n+2=6 | | 4+n=-2n+3n | | 2x-3x+5x+9(x+2)=50.5 | | /2x-3x+5x+9(x+2)=50.5 | | 7x^2-19x-15.5=0 | | 2u+5.5=16.3 | | 2n+2=-3-3n | | 391-2n=33 | | 6-3n=n+2 | | 4(t-3)+4=4(2t-4) | | 4x2+3=−3x | | -2(n+3)-1=-1+n | | -2(n+3)-1=-1 | | 6(x-2)/2=3(x+9)/2 | | ¼y=-4½ | | 3n+40=61 | | 27=x/4+8 | | 19.48+y=37.48 | | x-3(3+3x)=-9-2x | | -17x+170/x+11=0 | | 14+x=3(3x+2) | | ^2+12x=-25 | | y-8/2=9 | | -6+2m=-3(3m+2) |

Equations solver categories