If it's not what You are looking for type in the equation solver your own equation and let us solve it.
15x(x+7)=240
We move all terms to the left:
15x(x+7)-(240)=0
We multiply parentheses
15x^2+105x-240=0
a = 15; b = 105; c = -240;
Δ = b2-4ac
Δ = 1052-4·15·(-240)
Δ = 25425
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{25425}=\sqrt{225*113}=\sqrt{225}*\sqrt{113}=15\sqrt{113}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(105)-15\sqrt{113}}{2*15}=\frac{-105-15\sqrt{113}}{30} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(105)+15\sqrt{113}}{2*15}=\frac{-105+15\sqrt{113}}{30} $
| n/2-(-4)=5 | | 6(-x+2)=3(-4x+6) | | 6(-x+2)=3(-4x+6 | | 5x15=2550 | | n/4+6=3 | | -3+k*15=4 | | 2^x+5x=23 | | -3+k/15=-1 | | 3(3x-3)=72 | | -9+(x/3)=-3 | | -7x-6=-174 | | 2+(x/3)=-1 | | 6x(x+2)=66 | | (5/25)²=35/x | | (b/2)+3=1 | | 2x+1=3x=5 | | 174+a=290 | | 1+3v=-26 | | 1+3v=-36 | | -7x-5=-10x+13 | | 3(4-2x)+4+2x=4x-8(2-x) | | 2049+y=2053 | | 10w=255 | | 13m=75;m | | -n-5=-5 | | 4x+3=-2x+33 | | 5+(b/4)=3 | | 8x-11=6x+13 | | -4.9(t^2)+17.32(t)=3 | | (5/25)²=35/n | | 5+(b➗4)=3 | | 2/9x+4=18 |