5a^2+7a-2=0

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



5a^2+7a-2=0

a = 5; b = 7; c = -2;
Δ = b2-4ac
Δ = 72-4·5·(-2)
Δ = 89
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$a_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$a_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$a_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(7)-\sqrt{89}}{2*5}=\frac{-7-\sqrt{89}}{10}
$


$a_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(7)+\sqrt{89}}{2*5}=\frac{-7+\sqrt{89}}{10}
$

See similar equations:

| -3x-7=−8x−57 | | 5x-4(2+4x=14 | | (8y)^{2}(y=5) | | 4(-3x+5)=-12x+20 | | X+3/8x+23=100 | | 6x-(-9)=15 | | 7x-2+5x+14=180 | | 3z+15=50 | | 14x−5=10x+31 | | 4x-17+65=180 | | 6x−14=9x−5 | | -5x-5=-3x+5 | | 6x−2x2=3x+5x2 | | 3y+8+9y+1=180 | | -7x-4=-10x-10 | | 1.8=2b-2.2 | | x+19+9x+1=180 | | 10x+7=5x+12 | | 4.3(r+2)=17.2 | | -4(2x+1)=-8x–2 | | X+0.05x=255+0.03x | | -10=3/10k | | 2x=+4=x+9 | | 6k-9=7k-3 | | 6x-5=4x-23 | | 6x+14+8x-8=180 | | -1/2(-8x+6)=1/2(10x+8) | | -3=2/3k | | 2+7v+11=-27 | | -6-12x=12x−6+2x | | (1/64)^x=1/4 | | 1=-1/2y |

Equations solver categories