If it's not what You are looking for type in the equation solver your own equation and let us solve it.
(2x+5)(3x+9)=0
We multiply parentheses ..
(+6x^2+18x+15x+45)=0
We get rid of parentheses
6x^2+18x+15x+45=0
We add all the numbers together, and all the variables
6x^2+33x+45=0
a = 6; b = 33; c = +45;
Δ = b2-4ac
Δ = 332-4·6·45
Δ = 9
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{9}=3$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(33)-3}{2*6}=\frac{-36}{12} =-3 $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(33)+3}{2*6}=\frac{-30}{12} =-2+1/2 $
| 0.2x+0.9=0.3-0.7x | | 3x-3^x=0 | | 2x-10=1/3(2x+5) | | 3x=3^x | | w/2+1=1/4w-6 | | 3(2x+1)=3(x+3) | | 78-x-99=-100 | | 16x^2+2x-3=3 | | 5(3y+2)=-5 | | 2y+5=3(3y-7) | | 37-4x=-36-6x | | [3x=(6+6)-2 | | 10x−1=99 | | (w+7)/8=5 | | -17=-4+k | | 2(x+30)=360 | | 9x+1.5=4x+0.3 | | (x+2)/(x+1)= | | (2x-18)+(6x+32)=42 | | 2x36=1 | | (x-5)*3+8=x*2 | | 4x2+25=75 | | 3x+8-2x-2-5x=0 | | 8x+3(2x+5)=0 | | 7x+25=3x-10 | | 8/4x=65−5/4x | | 84x=65−54x | | 12n=8n+32 | | 9y^2-36y-36=0 | | 4p+28=p+37 | | 28x2+14x=0 | | 6x+3x-8=12-x |