If it's not what You are looking for type in the equation solver your own equation and let us solve it.
25x^2-40x-1=0
a = 25; b = -40; c = -1;
Δ = b2-4ac
Δ = -402-4·25·(-1)
Δ = 1700
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{1700}=\sqrt{100*17}=\sqrt{100}*\sqrt{17}=10\sqrt{17}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-40)-10\sqrt{17}}{2*25}=\frac{40-10\sqrt{17}}{50} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-40)+10\sqrt{17}}{2*25}=\frac{40+10\sqrt{17}}{50} $
| 2(p+1)+8(p−1)=5p | | 45x=2,565 | | 75,000=10,000(1.09)7x | | 1xx.49x=230 | | 0.02x^2+0.01x+0.03=0 | | -4(2y-2)=2y-12 | | 3x^2+9x-96=0 | | 700+x=1,665 | | 15x+3-20+2x+24=0 | | s+12=-34 | | 4x+1=2x+x+x+12 | | 30=(10-2x)(8-2x) | | x^2+x+15/4x^2-6x=0 | | c×12=48 | | a-66=4 | | 16.21+x=16.7 | | |8x-4|=0 | | 12x-7-3x=20 | | 8(3/4x+1/2)=5x | | 3h/8-10=65/24 | | 0.79x=1.8486 | | 4.82+x=11.8 | | 4(x-3)-(5x-2)=0 | | 50000=17x+10x+9500 | | −4(x+1)−9+2x=2(x−4)+19 | | 3m+18m^2=0 | | 6x=486 | | 4(-2x-2)=-20 | | 0.25x+x=15 | | 3x+15-7x=-8 | | 6.50+2b=16.43 | | -4(y+9)=-3y-3 |