If it's not what You are looking for type in the equation solver your own equation and let us solve it.
2n^2+13n-56=0
a = 2; b = 13; c = -56;
Δ = b2-4ac
Δ = 132-4·2·(-56)
Δ = 617
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$n_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$n_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$n_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(13)-\sqrt{617}}{2*2}=\frac{-13-\sqrt{617}}{4} $$n_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(13)+\sqrt{617}}{2*2}=\frac{-13+\sqrt{617}}{4} $
| h/3-8=19 | | 3x+10=5x+-6 | | (2/3)x+2/9=(5/6)x-25/9 | | 4(x+8)=-6x+2 | | c^2=28 | | (-1/3)x+-8=16 | | 4(1-3a)+7a=9 | | 15-7+x/5=13 | | 12x*21x=154638 | | 30-6(x-20)=66 | | (x+745)+x+(x-301)=6,360 | | b/4+8=12 | | 48/9=72/x | | 3(4y-3)+2y=47 | | 3×(x+5)=93 | | 3(4y-3)+2=47 | | (2^n)=7500400020 | | x-14x-7=-105 | | 2^n=7500400020 | | 3x-5=4x+55 | | -7(7x-9)=455 | | 2x^2+x+2=80 | | 4/7v=16 | | 1/6+d+2/3=1/4(d-2) | | 3x-4/5=7-2x | | x+x+31=180 | | 7x^2+3x=594 | | 25x+65=115 | | (2/5)x+7/15=157/15 | | 5(-3)+6y=9 | | 294z-1)=3(z+2) | | -14x-7=-105 |