3x^2+3x-70=0

Simple and best practice solution for 3x^2+3x-70=0 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+3x-70=0 equation:


Simplifying
3x2 + 3x + -70 = 0

Reorder the terms:
-70 + 3x + 3x2 = 0

Solving
-70 + 3x + 3x2 = 0

Solving for variable 'x'.

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

Divide each side by '3'.
-23.33333333 + x + x2 = 0

Move the constant term to the right:

Add '23.33333333' to each side of the equation.
-23.33333333 + x + 23.33333333 + x2 = 0 + 23.33333333

Reorder the terms:
-23.33333333 + 23.33333333 + x + x2 = 0 + 23.33333333

Combine like terms: -23.33333333 + 23.33333333 = 0.00000000
0.00000000 + x + x2 = 0 + 23.33333333
x + x2 = 0 + 23.33333333

Combine like terms: 0 + 23.33333333 = 23.33333333
x + x2 = 23.33333333

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
 + 0.25 + x2 = 23.33333333 + 0.25

Combine like terms:  + 0.25 = 1.25
1.25 + x2 = 23.33333333 + 0.25

Combine like terms: 23.33333333 + 0.25 = 23.58333333
1.25 + x2 = 23.58333333

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 23.58333333

Calculate the square root of the right side: 4.856267428

Break this problem into two subproblems by setting 
(x + 0.5) equal to 4.856267428 and -4.856267428.

Subproblem 1

x + 0.5 = 4.856267428 Simplifying x + 0.5 = 4.856267428 Reorder the terms: 0.5 + x = 4.856267428 Solving 0.5 + x = 4.856267428 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 4.856267428 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 4.856267428 + -0.5 x = 4.856267428 + -0.5 Combine like terms: 4.856267428 + -0.5 = 4.356267428 x = 4.356267428 Simplifying x = 4.356267428

Subproblem 2

x + 0.5 = -4.856267428 Simplifying x + 0.5 = -4.856267428 Reorder the terms: 0.5 + x = -4.856267428 Solving 0.5 + x = -4.856267428 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -4.856267428 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -4.856267428 + -0.5 x = -4.856267428 + -0.5 Combine like terms: -4.856267428 + -0.5 = -5.356267428 x = -5.356267428 Simplifying x = -5.356267428

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.356267428, -5.356267428}

See similar equations:

| .3(3z+7)+22.5=.6(3z-4) | | 9b^2-88b-20= | | 13(y+5)=8y+105 | | .3x-5=0.1(x+30) | | 3x^3+17x^2-30x-144=0 | | 2n-5=90 | | 2*6/5 | | .95y+2=y-.5 | | 12x^2-40x-192= | | F(-6)if(3)=4x+7 | | y+2=2y-7 | | 3.8x=2.7x+5.5 | | 2/5(-15d)= | | 3(a+2)+2(3a-1)= | | x-7/5-2=x-9/4 | | (9x^2y-5xy+4xy^2)-(4x^2y+10xy+3xy^2)= | | 1/3x-7=6 | | 3x^2-108x+2187=0 | | 1.1x=0 | | 7n^2+62n-80= | | 3x^2-108x-2187=0 | | 2y^2+36=0 | | 10(s-7)=6s-66 | | x^2-36x+729=0 | | (-2.6x+2)(-4)= | | 2*7/8 | | (4x+8)+7x+3= | | 2mx7/8m | | 7-x/10=x+9/5 | | X/t=f | | 2m*7/8m= | | 32a^4b-18b^3=0 |

Equations solver categories