If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x(x+15)=300
We move all terms to the left:
x(x+15)-(300)=0
We multiply parentheses
x^2+15x-300=0
a = 1; b = 15; c = -300;
Δ = b2-4ac
Δ = 152-4·1·(-300)
Δ = 1425
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{1425}=\sqrt{25*57}=\sqrt{25}*\sqrt{57}=5\sqrt{57}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(15)-5\sqrt{57}}{2*1}=\frac{-15-5\sqrt{57}}{2} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(15)+5\sqrt{57}}{2*1}=\frac{-15+5\sqrt{57}}{2} $
| (6x-4)(x+2)=2(11x-19)+2(3x^2-13) | | 5(x-0.4)=-2(0.7-x) | | x(x+1)^(x+2)=72 | | (3x+8)^2-64=0 | | 5x-9=9-x | | x-13=3(x-8) | | (x+4)(3x-2)-(3x-1)(3x+1)=2x(11-3x) | | 4x-1/2=x+7 | | 3/x+2=8/3-x | | x^2=3/5 | | x+5/8=9/10 | | 8x–22=-78 | | x/5+1/4=x/2 | | 45=y-8 | | |5x-1|=6 | | 3^(x)+2*3^(x-1)=45 | | (x-1)^3=0 | | 3yy=-1 | | (2x+5)^2=4x^2+25 | | 3x2+13x+10=0 | | 6x2-2x-8=0 | | 3x2+13x+-10=0 | | a²=64 | | 7x^2-1-(2x+1)(3x-2)=x^2 | | 8x+3=10x-4 | | 10(x+2)=6x+15 | | 3(2x-10)=4x-80 | | 7x-19=5x+49 | | 6x=2x=40 | | q/4+2=-1 | | 224x=0 | | x^2+30x+10800=0 |