If it's not what You are looking for type in the equation solver your own equation and let us solve it.
3c^2+4c-15=0
a = 3; b = 4; c = -15;
Δ = b2-4ac
Δ = 42-4·3·(-15)
Δ = 196
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$c_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$c_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$\sqrt{\Delta}=\sqrt{196}=14$$c_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(4)-14}{2*3}=\frac{-18}{6} =-3 $$c_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(4)+14}{2*3}=\frac{10}{6} =1+2/3 $
| 5x=x+70 | | 8y+72=24 | | 8x-1=360 | | 8x-1=306 | | Y=1/3(1/3)x | | 9x+9-5x=6×5 | | (3*z)+4=0.5+(z*5 | | y+10y-7=180 | | 3x-5=6x+5 | | (t+3/15)=3 | | -4+8x=6-2(3x-4)+2 | | 4x²-9x+20.25=0 | | 5x-8=4+6 | | 4x-10=x=90 | | (4x+30)/6=(9-x)/4 | | 4+4t2+t4=0 | | 4r2+12r=112 | | 2(59+x)+74=180 | | (4x+10)+2x=180 | | 2/7*k=4 | | 500-15x=455 | | 4a+5a+4a+5a=360 | | 1/5*k=2 | | 18=6+4q | | 2p-5=-3p=35 | | 5b^2+24b-36=0 | | (4s–1=)(3s+4=) | | 2x/3+1=x | | x+46+76+x+68=180 | | 6+3(3x-5+7x)=-2x-1 | | 5/7=12.5÷x | | x=9-1/6 |