If it's not what You are looking for type in the equation solver your own equation and let us solve it.
15=6x^2+6x+3
We move all terms to the left:
15-(6x^2+6x+3)=0
We get rid of parentheses
-6x^2-6x-3+15=0
We add all the numbers together, and all the variables
-6x^2-6x+12=0
a = -6; b = -6; c = +12;
Δ = b2-4ac
Δ = -62-4·(-6)·12
Δ = 324
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{324}=18$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-6)-18}{2*-6}=\frac{-12}{-12} =1 $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-6)+18}{2*-6}=\frac{24}{-12} =-2 $
| -6f3f=-72 | | 7(n−83)=91 | | -1=1/4(-m-19) | | 3(5+x)=9+9 | | 3=4.9(x^2) | | 2x^2+1=-39 | | e+e=48 | | -3+-2v=7 | | 36=11-(2z-6) | | 1/4x1/3=71/6 | | 2x+x+(x+10)+(2x-16)=360 | | -7f=56-f | | X^2+5x-7=x+5 | | d-12d=77 | | 14n=35,n= | | -(4x-3)=-7(9+x) | | 110+x+44+x+35=180 | | 4c-6c=18 | | 11-5×x=1 | | -7(3x+4)=35 | | 49=7r,r | | V=(200-2x)(150-2x) | | l5-8|-2|=75 | | 9b-6b=39 | | 5x+1+6x=-120 | | 4/5=h/16 | | 34=16-(2z-7) | | 49=7rr | | 2m+6=3-4m | | m(m2-5m+2)=-8 | | 60+70+x+62=180 | | 2.5x+7.75=19 |