If it's not what You are looking for type in the equation solver your own equation and let us solve it.
2x+20=3(2x+4)x=
We move all terms to the left:
2x+20-(3(2x+4)x)=0
We calculate terms in parentheses: -(3(2x+4)x), so:We get rid of parentheses
3(2x+4)x
We multiply parentheses
6x^2+12x
Back to the equation:
-(6x^2+12x)
-6x^2+2x-12x+20=0
We add all the numbers together, and all the variables
-6x^2-10x+20=0
a = -6; b = -10; c = +20;
Δ = b2-4ac
Δ = -102-4·(-6)·20
Δ = 580
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{580}=\sqrt{4*145}=\sqrt{4}*\sqrt{145}=2\sqrt{145}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-10)-2\sqrt{145}}{2*-6}=\frac{10-2\sqrt{145}}{-12} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-10)+2\sqrt{145}}{2*-6}=\frac{10+2\sqrt{145}}{-12} $
| -10x+4=5x-11 | | 19r=20r-16 | | -3x-8=-4x+2x= | | 2x+x-3x=-10+1+5 | | 2x+16+3x–21+4x–13+2x+30=287 | | -9y+6=9-18-4y | | 3x+10=4x+30 | | 6=(2x=26) | | -6(1-5x)-4(-3+7x)=6+2x | | 52=7r+2+3r | | 5x-13=97 | | 13(-9b+15)=17 | | 5^(x-2)=137 | | –6x+8x–5=3 | | -8-7t=-6t-17 | | a-10-20=50 | | 10(x-5)=9(x-5) | | 5^(x-2)=137 | | (5x+2)=1/2(3x-2)=(5x+11) | | z=-10-9z | | -10-9c=-1-8c | | -154=-7-3(1-6v) | | x=12(12)=8 | | -4n-7+3n+4=25 | | -5+3y=9+2y-7 | | x=1212=8 | | 2(3n+2)+n=3n+5(6+6n) | | 6.7x+9.3=-9.4+3.4(2-5x) | | 144=8(6+4n) | | 3(6x+1)=11-5(12-x) | | 4x+2+5x-13=90 | | 14-3x=21 |