If it's not what You are looking for type in the equation solver your own equation and let us solve it.
2x^2+21x+27=0
a = 2; b = 21; c = +27;
Δ = b2-4ac
Δ = 212-4·2·27
Δ = 225
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{225}=15$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(21)-15}{2*2}=\frac{-36}{4} =-9 $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(21)+15}{2*2}=\frac{-6}{4} =-1+1/2 $
| A=3²,B=2/3eC=50 | | 7(5n-4)-1=14-8n | | 1+2u=33 | | 2(3x+2)=6+5 | | 0.1y+y=13000 | | 180-2y=140 | | 9x^2-36x-37=0 | | 90+z=180 | | 17+4x=23-3x | | 5m+6(6-2m)=1 | | 6.5x=12.2x | | (0.1x)+x=13000 | | 60÷(3y+2)=12 | | (10/100)x+x=13000 | | 9x^-36x-37=0 | | I5xI=3-x | | (5x)/2+2=22 | | 2x3/5+x=8x(-4.5)-(-2x) | | 23/5+x=8x(-4.5)-(-2x) | | 0.1x+x=13000 | | 3y^-14y+8=0 | | 9x2-36x-37=0 | | b/2+7=18 | | 7(z+3)=4z-6 | | 4-z÷7=z | | 5=16^0.0125x | | 0.1x+x=200 | | 4x=40-10+10 | | 4x+10-(5x2)=40 | | (¼x+½)×12=(⅙x+2)x12 | | 4z+2z=6z+2z | | 6x-12=4x+23 |