x(2x+3)=20

Simple and best practice solution for x(2x+3)=20 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 x(2x+3)=20 equation:


Simplifying
x(2x + 3) = 20

Reorder the terms:
x(3 + 2x) = 20
(3 * x + 2x * x) = 20
(3x + 2x2) = 20

Solving
3x + 2x2 = 20

Solving for variable 'x'.

Reorder the terms:
-20 + 3x + 2x2 = 20 + -20

Combine like terms: 20 + -20 = 0
-20 + 3x + 2x2 = 0

Factor a trinomial.
(-4 + -1x)(5 + -2x) = 0

Subproblem 1

Set the factor '(-4 + -1x)' equal to zero and attempt to solve: Simplifying -4 + -1x = 0 Solving -4 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + -1x = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -1x = 0 + 4 -1x = 0 + 4 Combine like terms: 0 + 4 = 4 -1x = 4 Divide each side by '-1'. x = -4 Simplifying x = -4

Subproblem 2

Set the factor '(5 + -2x)' equal to zero and attempt to solve: Simplifying 5 + -2x = 0 Solving 5 + -2x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -2x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -2x = 0 + -5 -2x = 0 + -5 Combine like terms: 0 + -5 = -5 -2x = -5 Divide each side by '-2'. x = 2.5 Simplifying x = 2.5

Solution

x = {-4, 2.5}

See similar equations:

| 4y=13+2y | | 0x=45 | | m^3-2m^2-9m+18=0 | | [(x^2-10x+25)-3]=0 | | 4x^2-3x+11=5x+8 | | 2(3b+4)=44 | | m^2-2m+5=0 | | 12z+34*6-7(2z/5)=435 | | m^2+3m+2=0 | | 30=5(3x+4) | | -2(12)+3(1.71)= | | x^2-7x-9=4x+3 | | m^2+m+1=0 | | -5+25x+-40x-10=-12x | | m^2-12m+36=0 | | 176-3x=24x+23 | | -5-25x+-40x-10=-4x-8x | | 10-9x=43-16x | | -5-25x+-40x-10=-12x | | 3x-6-12x+15=9x+3x-8 | | m^2=1-3m | | 8m=2(3m+2) | | 9+6(t-9)=4(t+7)+9 | | 80x=7034 | | 20-5x=11+4x | | 6x+1=3x+10 | | -12x+-9+24x+4=43 | | 3+4=2x | | (4x+3)(2x-5)=0 | | R^2-14R+45=0 | | 24x^2=55x+89 | | 3n-5=48+40n |

Equations solver categories