2x(x+3)=x+11

Simple and best practice solution for 2x(x+3)=x+11 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 2x(x+3)=x+11 equation:



2x(x+3)=x+11
We move all terms to the left:
2x(x+3)-(x+11)=0
We multiply parentheses
2x^2+6x-(x+11)=0
We get rid of parentheses
2x^2+6x-x-11=0
We add all the numbers together, and all the variables
2x^2+5x-11=0
a = 2; b = 5; c = -11;
Δ = b2-4ac
Δ = 52-4·2·(-11)
Δ = 113
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{-(5)-\sqrt{113}}{2*2}=\frac{-5-\sqrt{113}}{4} $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(5)+\sqrt{113}}{2*2}=\frac{-5+\sqrt{113}}{4} $

See similar equations:

| 2x-22=68 | | -4q=2+q | | 6(3x-4)-10(x-3)-1=10(2x-3) | | d-7=3+d | | c+4c=5-2c | | 2a²+8a=0 | | 5(y-3)=12+y | | 3(3m-3)=3(m+65) | | x²+1x+1x=0 | | 40-11y=55 | | 64x2-14x+81=0. | | 792x-4)+3(5-3x)=2 | | 12m-3m+5m=28 | | 6–m=5m+30 | | 6-m=5m- | | F(x)=3x^2-16x+9 | | 12x—8=3x+64; | | 12x—8=3x+64;x | | 12x—8=3x+64;x= | | 183(p+2)=30 | | -25+(t/2)=50 | | 4x^2/(0.5-2x)^2*(0.5-x)=0.25 | | 2^(x-1)=200 | | (f/2)-22=48 | | (f2)-22=48 | | (a-8)+15=23 | | 4x+6=28+2x-8 | | X=0.5,y=3 | | 8x=18×14 | | 7m–2=14 | | a^2=226 | | 0.3x+9=12 |

Equations solver categories