3x(x+4)=5(x-2)

Simple and best practice solution for 3x(x+4)=5(x-2) 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 3x(x+4)=5(x-2) equation:


Simplifying
3x(x + 4) = 5(x + -2)

Reorder the terms:
3x(4 + x) = 5(x + -2)
(4 * 3x + x * 3x) = 5(x + -2)
(12x + 3x2) = 5(x + -2)

Reorder the terms:
12x + 3x2 = 5(-2 + x)
12x + 3x2 = (-2 * 5 + x * 5)
12x + 3x2 = (-10 + 5x)

Solving
12x + 3x2 = -10 + 5x

Solving for variable 'x'.

Reorder the terms:
10 + 12x + -5x + 3x2 = -10 + 5x + 10 + -5x

Combine like terms: 12x + -5x = 7x
10 + 7x + 3x2 = -10 + 5x + 10 + -5x

Reorder the terms:
10 + 7x + 3x2 = -10 + 10 + 5x + -5x

Combine like terms: -10 + 10 = 0
10 + 7x + 3x2 = 0 + 5x + -5x
10 + 7x + 3x2 = 5x + -5x

Combine like terms: 5x + -5x = 0
10 + 7x + 3x2 = 0

Begin completing the square.  Divide all terms by
3 the coefficient of the squared term: 

Divide each side by '3'.
3.333333333 + 2.333333333x + x2 = 0

Move the constant term to the right:

Add '-3.333333333' to each side of the equation.
3.333333333 + 2.333333333x + -3.333333333 + x2 = 0 + -3.333333333

Reorder the terms:
3.333333333 + -3.333333333 + 2.333333333x + x2 = 0 + -3.333333333

Combine like terms: 3.333333333 + -3.333333333 = 0.000000000
0.000000000 + 2.333333333x + x2 = 0 + -3.333333333
2.333333333x + x2 = 0 + -3.333333333

Combine like terms: 0 + -3.333333333 = -3.333333333
2.333333333x + x2 = -3.333333333

The x term is 2.333333333x.  Take half its coefficient (1.166666667).
Square it (1.361111112) and add it to both sides.

Add '1.361111112' to each side of the equation.
2.333333333x + 1.361111112 + x2 = -3.333333333 + 1.361111112

Reorder the terms:
1.361111112 + 2.333333333x + x2 = -3.333333333 + 1.361111112

Combine like terms: -3.333333333 + 1.361111112 = -1.972222221
1.361111112 + 2.333333333x + x2 = -1.972222221

Factor a perfect square on the left side:
(x + 1.166666667)(x + 1.166666667) = -1.972222221

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 4x+1=x-7 | | 12x+15x=13.75 | | k+(-8)=29 | | 5(g+44)+g(230)=485 | | 5(2x+9)+7=10x+52 | | 12x+8=10 | | 5(a+5)=7(a+5) | | 25+25+18+p=20 | | -8x-7(5x+7)=-7x+23 | | 12x+15y=13.75 | | 5y+3x=142 | | 2x-7=-1 | | .08x+.09x+.055x=675 | | x^2+x+1=1 | | 10-0.2m=5 | | .30x-.20=5.20 | | 5y-14=-5+8y | | 12x-18=9(x-2)+3x | | 17x+5=107 | | 5x-3(2x-2)=3x-4 | | 16x^4-54x=0 | | 5x-2=2x+6 | | .55x-2.1=5.30 | | 9t-22+t^2= | | 15n+8.5=385 | | 64m^3+125=0 | | 8y+7=6y-5 | | 8x^3-10x^2-4x= | | -143=-13 | | -6(1+a)=-8a-20 | | 10-.2m=5 | | 3(a-5)-5a=2a+9 |

Equations solver categories