5x^2+10x=-3

Simple and best practice solution for 5x^2+10x=-3 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 5x^2+10x=-3 equation:


Simplifying
5x2 + 10x = -3

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

Solving
10x + 5x2 = -3

Solving for variable 'x'.

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

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

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

Divide each side by '5'.
0.6 + 2x + x2 = 0

Move the constant term to the right:

Add '-0.6' to each side of the equation.
0.6 + 2x + -0.6 + x2 = 0 + -0.6

Reorder the terms:
0.6 + -0.6 + 2x + x2 = 0 + -0.6

Combine like terms: 0.6 + -0.6 = 0.0
0.0 + 2x + x2 = 0 + -0.6
2x + x2 = 0 + -0.6

Combine like terms: 0 + -0.6 = -0.6
2x + x2 = -0.6

The x term is 2x.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2x + 1 + x2 = -0.6 + 1

Reorder the terms:
1 + 2x + x2 = -0.6 + 1

Combine like terms: -0.6 + 1 = 0.4
1 + 2x + x2 = 0.4

Factor a perfect square on the left side:
(x + 1)(x + 1) = 0.4

Calculate the square root of the right side: 0.632455532

Break this problem into two subproblems by setting 
(x + 1) equal to 0.632455532 and -0.632455532.

Subproblem 1

x + 1 = 0.632455532 Simplifying x + 1 = 0.632455532 Reorder the terms: 1 + x = 0.632455532 Solving 1 + x = 0.632455532 Solving for variable 'x'. 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 = 0.632455532 + -1 Combine like terms: 1 + -1 = 0 0 + x = 0.632455532 + -1 x = 0.632455532 + -1 Combine like terms: 0.632455532 + -1 = -0.367544468 x = -0.367544468 Simplifying x = -0.367544468

Subproblem 2

x + 1 = -0.632455532 Simplifying x + 1 = -0.632455532 Reorder the terms: 1 + x = -0.632455532 Solving 1 + x = -0.632455532 Solving for variable 'x'. 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 = -0.632455532 + -1 Combine like terms: 1 + -1 = 0 0 + x = -0.632455532 + -1 x = -0.632455532 + -1 Combine like terms: -0.632455532 + -1 = -1.632455532 x = -1.632455532 Simplifying x = -1.632455532

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.367544468, -1.632455532}

See similar equations:

| 5(b+1)=60 | | 5x+10y=135 | | 6+2n=6 | | .5x+.10y=1.35 | | 2(k-1)=4+3(2+k) | | 1.15+2.6= | | 32x+6=-11x-77 | | (1-1/4)(1+5/6) | | 1-(1/4)1+(5/6) | | 3+i/2-3i | | 23-4p=7 | | 5x-4=7x+8 | | 1/8+x=25 | | -5(b+2)=-5(b-6) | | (9x+3m-5)+(2x-2m+1)= | | 5b=85 | | 1+(-1/4)1+(5/6) | | 9y=2 | | m/2=m+4/7 | | (3k^2-2k-1)/(3k^2-14k+11)-(9k^2-1)/(3k^2+8k-11) | | 2y+3=4 | | 1+(-1/4)(1+5/6) | | 1/6(6t-4)=7/6t-t+4/12 | | (x+4)(x+4)-2x-5=(x-1)(x-1) | | X+20=(8)(15) | | 21-2w=7 | | (5/6)^2-(1/3)(2/5) | | -0.6x/3=8 | | -8(7x-7)=8(2x+7) | | 3xy-9y+10xy-1y= | | 40+y=92 | | 2b/9=4 |

Equations solver categories