If it's not what You are looking for type in the equation solver your own equation and let us solve it.
4w^2-7w-15=0
a = 4; b = -7; c = -15;
Δ = b2-4ac
Δ = -72-4·4·(-15)
Δ = 289
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$w_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$w_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$\sqrt{\Delta}=\sqrt{289}=17$$w_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-7)-17}{2*4}=\frac{-10}{8} =-1+1/4 $$w_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-7)+17}{2*4}=\frac{24}{8} =3 $
| X=-2x+5 | | 2=1,57*(x) | | 6x=6x/4 | | 2=1,57*x | | 5(x-6)+2=7x-2 | | 0,5x-8=-20 | | 3x+4-(4x-7)=10 | | 7x+15=39-x | | 2000+0.1x=x | | 4x^2-13x+36=0 | | 7=x^2+6 | | 12x+x/4=15-20 | | n(n+1)/2=45 | | -1+3x=-3x+25x | | 0=(t-4)-3 | | 1+12x=-54+ | | 7(x-3)+3(4+x)=-8 | | 1+12x=-54+12x | | X+8=2x-42 | | -10x-11=-204 | | 6x+10=10x+28 | | 12x+10=10x+28 | | 4/x=20/60 | | 13w-5=9w+51 | | 0.7(3x+6=1.1-(x-3) | | (3+5x)(2-3x)=12-15^2 | | 0=-0.75x^2+3.5x-1 | | 10x+(100-x)11=1081 | | (3x-18)^2+59=14 | | |z|=3 | | -2=0,9671429x+9,515714 | | 1s=25+.75s |