5x^2+30x=40

Simple and best practice solution for 5x^2+30x=40 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+30x=40 equation:


Simplifying
5x2 + 30x = 40

Reorder the terms:
30x + 5x2 = 40

Solving
30x + 5x2 = 40

Solving for variable 'x'.

Reorder the terms:
-40 + 30x + 5x2 = 40 + -40

Combine like terms: 40 + -40 = 0
-40 + 30x + 5x2 = 0

Factor out the Greatest Common Factor (GCF), '5'.
5(-8 + 6x + x2) = 0

Ignore the factor 5.

Subproblem 1

Set the factor '(-8 + 6x + x2)' equal to zero and attempt to solve: Simplifying -8 + 6x + x2 = 0 Solving -8 + 6x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '8' to each side of the equation. -8 + 6x + 8 + x2 = 0 + 8 Reorder the terms: -8 + 8 + 6x + x2 = 0 + 8 Combine like terms: -8 + 8 = 0 0 + 6x + x2 = 0 + 8 6x + x2 = 0 + 8 Combine like terms: 0 + 8 = 8 6x + x2 = 8 The x term is 6x. Take half its coefficient (3). Square it (9) and add it to both sides. Add '9' to each side of the equation. 6x + 9 + x2 = 8 + 9 Reorder the terms: 9 + 6x + x2 = 8 + 9 Combine like terms: 8 + 9 = 17 9 + 6x + x2 = 17 Factor a perfect square on the left side: (x + 3)(x + 3) = 17 Calculate the square root of the right side: 4.123105626 Break this problem into two subproblems by setting (x + 3) equal to 4.123105626 and -4.123105626.

Subproblem 1

x + 3 = 4.123105626 Simplifying x + 3 = 4.123105626 Reorder the terms: 3 + x = 4.123105626 Solving 3 + x = 4.123105626 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = 4.123105626 + -3 Combine like terms: 3 + -3 = 0 0 + x = 4.123105626 + -3 x = 4.123105626 + -3 Combine like terms: 4.123105626 + -3 = 1.123105626 x = 1.123105626 Simplifying x = 1.123105626

Subproblem 2

x + 3 = -4.123105626 Simplifying x + 3 = -4.123105626 Reorder the terms: 3 + x = -4.123105626 Solving 3 + x = -4.123105626 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = -4.123105626 + -3 Combine like terms: 3 + -3 = 0 0 + x = -4.123105626 + -3 x = -4.123105626 + -3 Combine like terms: -4.123105626 + -3 = -7.123105626 x = -7.123105626 Simplifying x = -7.123105626

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.123105626, -7.123105626}

Solution

x = {1.123105626, -7.123105626}

See similar equations:

| ab*2a= | | 0.5(8x-12)=-10 | | 3y=7x+12 | | x^4+5=7 | | 29y+6=50 | | X^2+11x-360=0 | | ln(x+3)+ln(x+4)-ln(x)=ln(15) | | 7n-10=46 | | 0.30(x-100000)=202500.00 | | 3x+8-2x=0 | | 3y*3y= | | 16t^2+40t+144=h(t) | | 5x+11=31-5x | | 2+2+4+63882983= | | 3(x+7)=5x+13 | | 6+4(r-2)=7+r | | 2x-4(0)=10 | | X+y+5z=-12 | | 5n+4-2n= | | 1/3/4/3= | | s*4-21=19 | | 6x+2x-3=2x+9 | | (x+1)+x=1.1 | | t*4-6=13 | | a*5+6=15 | | log(x^2-9)-log(x+3)=2 | | 9*5+6=15 | | -7=4m+15-6m | | x+6=4x+3 | | 10h-12=88 | | -16t^2=-79t-5 | | x=e^3 |

Equations solver categories