If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-10x(x+15)+3x=39
We move all terms to the left:
-10x(x+15)+3x-(39)=0
We add all the numbers together, and all the variables
3x-10x(x+15)-39=0
We multiply parentheses
-10x^2+3x-150x-39=0
We add all the numbers together, and all the variables
-10x^2-147x-39=0
a = -10; b = -147; c = -39;
Δ = b2-4ac
Δ = -1472-4·(-10)·(-39)
Δ = 20049
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-147)-\sqrt{20049}}{2*-10}=\frac{147-\sqrt{20049}}{-20} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-147)+\sqrt{20049}}{2*-10}=\frac{147+\sqrt{20049}}{-20} $
| a+-(1.6)=-3.7 | | -4y=-5y+10 | | -144+12x=36+2x | | 1.6*7.1=x | | 2^(5*x+2)-(5^(x-6))=0 | | r+3=-13 | | ∠7=2x+39 | | -6z-4=5z | | ∠1=3x+18 | | -9=4+k | | 7s+3=8s | | -4m-6(1-5m)=21-7m | | 2x+(10x-6)=7x+(4x-7) | | y=281.4(1.02)^10 | | -7(u-4)=-5u+34 | | a+(-17)=-17 | | 26-b=19 | | -10x-100=-x+161 | | y=1-2=6 | | 13-6m=1 | | b+0,6=-1 | | -3w+23=4(w-3) | | -2/3x13/5=x | | 7u=-5+8u | | 273+47+x=360 | | 273+47+x=369 | | 7u=–5+8u | | 3(x+7)-8x=-29 | | 5/3x+1/3x=20/3+7/3x | | 6=u-15 | | -53+4p=7 | | 5e+-1/3=-3/4 |