5y^2+7y-1=0

Simple and best practice solution for 5y^2+7y-1=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 5y^2+7y-1=0 equation: 



5y^2+7y-1=0

a = 5; b = 7; c = -1;
Δ = b2-4ac
Δ = 72-4·5·(-1)
Δ = 69
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(7)-\sqrt{69}}{2*5}=\frac{-7-\sqrt{69}}{10}
$


$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(7)+\sqrt{69}}{2*5}=\frac{-7+\sqrt{69}}{10}
$

See similar equations:

| 4850+3n=10 | | 3(3y+5=78 | | 88=x+(x-13) | | 7n+6.5=3.2+17.9 | | 101=3e-7 | | 180=6z+1+77 | | 11w=10+9w | | 90=r+5+2r+4 | | 7-w=257 | | 180=5q+2+78 | | 19x+7=13x+7 | | 90=2n+7+3n+3 | | 82=6e+2 | | 5(2y-6)=59 | | 90=8z+3z+2 | | 90=3e+2+55 | | 90=9r+2+70 | | 83+12x+1=180 | | 32.50=1.5x+4 | | 99+8x+9=180 | | -4+3b=11 | | 5c=2c-18 | | 13=-8x=-5x+4 | | 2(2x+4)=-6(x+9) | | 2/7*x=28 | | 6/x=27/34 | | (x-785)=0 | | 9+4=-5+14+13e | | 3x+4+8x+4+140=189 | | 104+x=200 | | 13x-1=6x-4 | | 12.5=-1.5+b/0 |

Equations solver categories