If it's not what You are looking for type in the equation solver your own equation and let us solve it.
4x^2+4x-15=0
a = 4; b = 4; c = -15;
Δ = b2-4ac
Δ = 42-4·4·(-15)
Δ = 256
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$\sqrt{\Delta}=\sqrt{256}=16$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(4)-16}{2*4}=\frac{-20}{8} =-2+1/2 $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(4)+16}{2*4}=\frac{12}{8} =1+1/2 $
| 3*a=14.4 | | 1/5y+3=2/5 | | -0.3+0.7+1=4-4x | | 6(x-1/3)=-2(x=23) | | 8+45b=910b | | 1666=34p+20 | | 17000/x=6000 | | 7v-33=2(v-4) | | 1666=20p+34 | | 8x+6=7x=22 | | x^2–3x–10=0 | | x/3-x+2/11=6 | | x2–3x–10=0 | | x+33=5x | | 8y=14+6y | | -4w+6=w+9-2w | | 13x+33=5x | | x=6*8.7 | | 4(h+2)=12 | | 156+125+x=180 | | 3a^2-14a+16=0 | | 33x+13=5x | | 2/5y-5/8y=5/13 | | 2y+9-6=0 | | −49f=−3−49f=−3 | | (15x+9)=(15x-8) | | -6=3.8r | | 20+35+x=180 | | 4n=98 | | -5(2t+5)=5 | | (3/5)^2x=1 | | ƒ(x)=4x–11 |