3x^2+5=-8x

Simple and best practice solution for 3x^2+5=-8x 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^2+5=-8x equation:


Simplifying
3x2 + 5 = -8x

Reorder the terms:
5 + 3x2 = -8x

Solving
5 + 3x2 = -8x

Solving for variable 'x'.

Reorder the terms:
5 + 8x + 3x2 = -8x + 8x

Combine like terms: -8x + 8x = 0
5 + 8x + 3x2 = 0

Factor a trinomial.
(5 + 3x)(1 + x) = 0

Subproblem 1

Set the factor '(5 + 3x)' equal to zero and attempt to solve: Simplifying 5 + 3x = 0 Solving 5 + 3x = 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 + 3x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + 3x = 0 + -5 3x = 0 + -5 Combine like terms: 0 + -5 = -5 3x = -5 Divide each side by '3'. x = -1.666666667 Simplifying x = -1.666666667

Subproblem 2

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

Solution

x = {-1.666666667, -1}

See similar equations:

| y/19=-9 | | 200+(-657)-(-42)+305= | | 136-2x=43x+21 | | 10-9x=76-30x | | 6n-35=n | | x-7.6=-5.9 | | 17-8y=4y-7 | | -4(m+9.2)=-8 | | 2y^2-28y-64=0 | | -7.9x=23.9 | | -6x-9=-57 | | x^6+14x^4+49x^2+36=0 | | -8+2x=-4 | | 4(x-5)=52/13 | | 8-(-12)=m-12-5m | | 6x-15=6x-2+7 | | 3x^2+14x-17=0 | | (x^2)ln(x)-4ln(x)=0 | | 5/6(48)=x | | 5/6(48) | | 21(c-51)=19550 | | -7+u+4.1-2u=-10 | | a+108-24=246 | | 36-6x=21-3x | | 3x-12y-6=15 | | 18x+6y=12 | | 38(10-2.5x)=12(2x-10)+47.8 | | 3.8(10-2.5x)=12(2x-10)+47.8 | | y=9+3z | | 3/5n=-3/10 | | 8(d+2.3)=16d-10.4 | | 8(d+2.3)=16d-2.4 |

Equations solver categories