If it's not what You are looking for type in the equation solver your own equation and let us solve it.
15x^2-40x+15=0
a = 15; b = -40; c = +15;
Δ = b2-4ac
Δ = -402-4·15·15
Δ = 700
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{700}=\sqrt{100*7}=\sqrt{100}*\sqrt{7}=10\sqrt{7}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-40)-10\sqrt{7}}{2*15}=\frac{40-10\sqrt{7}}{30} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-40)+10\sqrt{7}}{2*15}=\frac{40+10\sqrt{7}}{30} $
| 100+w+40.7=180 | | 6x-110=10x+30 | | 4x-23+3x+22=x | | x2+5x-104=3(x-8) | | x2+12x-46=3(x-8) | | 10+w+40.7=180 | | 9n-4n+2=22 | | x2=-4x | | 12x-71=44+7x | | 2x2=7x+9 | | h=1250(0.865 | | -139-3x=-15x+89 | | 4(x+7-20)=5x+3-2x | | x2-4=3x | | -6+6(2x-9)=72 | | 4x2+-22x=12 | | x-9+66+x=x | | x+95+x+25=x | | 5x2-4x-9=0 | | x-9+x+66=x | | 7−9x=−29= | | 7x-9=28+4(x-1 | | 3x+-10=13 | | F=470(0.5y | | 2c−7=c | | x+.07=12000 | | 77-x=146 | | x+(x+15)=159 | | 20+25x=90+15x | | 3x=24=9 | | g=700(0.995Y | | 3x+10=2x50 |