If it's not what You are looking for type in the equation solver your own equation and let us solve it.
4x^2+15x+9=0
a = 4; b = 15; c = +9;
Δ = b2-4ac
Δ = 152-4·4·9
Δ = 81
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{81}=9$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(15)-9}{2*4}=\frac{-24}{8} =-3 $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(15)+9}{2*4}=\frac{-6}{8} =-3/4 $
| 34x+7=16 | | 4t-5422t=24 | | 8b/7=5/7 | | 10x^2+39x+144=0 | | u+2=54 | | 8c=80;c=10 | | 6(2x+4)=5(x-2) | | (4x=3(x+6)) | | -3/5b+7+2/5b=9 | | 8(2x+5)-2=-90 | | 4w+3+w=-2+4w-1 | | 4h-9=6h-11 | | 4w+3w+w=-2+42-1 | | 3x+14(10)=155 | | -13-5x=-5x+13 | | 66=4u-14 | | X^2+6-11=9x-1 | | 4(x+6)-7x=33 | | 74+11x=5x-142 | | 2/3z=11/3+2z | | -s/2=10 | | (8-u)(5u+6)=0 | | 10(x*7)+5(x)=3.00 | | 74+11x=5x+142 | | 10(x7)+5(x)=3.00 | | y/7-6=17 | | 3+8x=29 | | 84x^2+64x+8=82x+6 | | 9-x=51 | | (3^n-3^n-1)/(3^3X3^n-27X3^n-1)=0 | | 6a+3=2a-18 | | Z10e+15=5(19-6e) |