If it's not what You are looking for type in the equation solver your own equation and let us solve it.
(2x+9)(x+5)=0
We multiply parentheses ..
(+2x^2+10x+9x+45)=0
We get rid of parentheses
2x^2+10x+9x+45=0
We add all the numbers together, and all the variables
2x^2+19x+45=0
a = 2; b = 19; c = +45;
Δ = b2-4ac
Δ = 192-4·2·45
Δ = 1
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{1}=1$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(19)-1}{2*2}=\frac{-20}{4} =-5 $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(19)+1}{2*2}=\frac{-18}{4} =-4+1/2 $
| -8-4(1+5x)=26 | | 3b+5b=-8 | | 9(z+8)=−9z−72 | | -7(2b-4)=10-10b+20 | | 4(c+1)-6=14 | | 9x-6x+12-6=12 | | 7(z+6)=77 | | 2(c+2)+6=18 | | 6(x+2)-5x=30 | | x+5=16-4 | | t+6=1 | | 2(a-3)=10 | | -5x+7(x+3)=28 | | 0,5r+1,2=-12r+0,5 | | 14+x=131 | | 4(t+2)+2=18 | | 5(p+2)=30 | | 4t+2)+2=18 | | 9x+x-5x=+6+5 | | (8a-2)/3=4a | | 3p+32=14-2p | | 15x^2-50x+15=0 | | 9x+3(x-6)=30 | | h=-40 | | 46-b=854 | | 7w-56=0 | | q^2+20q-200=0 | | 15x+20+2=65 | | -1.5+0.5x=-1.5 | | 7n+2=3 | | -3-2y=11 | | 7x+4-3x=4(x+1) |