x(x+3)=35

Simple and best practice solution for x(x+3)=35 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 x(x+3)=35 equation:


Simplifying
x(x + 3) = 35

Reorder the terms:
x(3 + x) = 35
(3 * x + x * x) = 35
(3x + x2) = 35

Solving
3x + x2 = 35

Solving for variable 'x'.

Reorder the terms:
-35 + 3x + x2 = 35 + -35

Combine like terms: 35 + -35 = 0
-35 + 3x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '35' to each side of the equation.
-35 + 3x + 35 + x2 = 0 + 35

Reorder the terms:
-35 + 35 + 3x + x2 = 0 + 35

Combine like terms: -35 + 35 = 0
0 + 3x + x2 = 0 + 35
3x + x2 = 0 + 35

Combine like terms: 0 + 35 = 35
3x + x2 = 35

The x term is 3x.  Take half its coefficient (1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
3x + 2.25 + x2 = 35 + 2.25

Reorder the terms:
2.25 + 3x + x2 = 35 + 2.25

Combine like terms: 35 + 2.25 = 37.25
2.25 + 3x + x2 = 37.25

Factor a perfect square on the left side:
(x + 1.5)(x + 1.5) = 37.25

Calculate the square root of the right side: 6.103277808

Break this problem into two subproblems by setting 
(x + 1.5) equal to 6.103277808 and -6.103277808.

Subproblem 1

x + 1.5 = 6.103277808 Simplifying x + 1.5 = 6.103277808 Reorder the terms: 1.5 + x = 6.103277808 Solving 1.5 + x = 6.103277808 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = 6.103277808 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = 6.103277808 + -1.5 x = 6.103277808 + -1.5 Combine like terms: 6.103277808 + -1.5 = 4.603277808 x = 4.603277808 Simplifying x = 4.603277808

Subproblem 2

x + 1.5 = -6.103277808 Simplifying x + 1.5 = -6.103277808 Reorder the terms: 1.5 + x = -6.103277808 Solving 1.5 + x = -6.103277808 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = -6.103277808 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = -6.103277808 + -1.5 x = -6.103277808 + -1.5 Combine like terms: -6.103277808 + -1.5 = -7.603277808 x = -7.603277808 Simplifying x = -7.603277808

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.603277808, -7.603277808}

See similar equations:

| -2.67x-8.4=6.072+0.03x | | y=(-0.25)x+50 | | -230+2x=19+3x | | (t+z)=45z+67 | | g(X)=x-3+2 | | 2d-4=-3 | | 6x-15+4x+8=3x+9+7x-16 | | 3x+20=1500 | | 2g+7=15 | | -11+2x=19+3x | | 24x+11=123 | | -20+13x=22+11x | | 3c+2p=78 | | X-9=-3+8 | | 2b+1=-9 | | 2*-1.6+6y=-12 | | -3(7m+4)=20-5m | | 2p-4=3 | | 3x=(x-56) | | 3x+10x=5x+4x | | 7(6+3x)=105A | | 5y-3=-15 | | 25x+0.6=-30 | | 2q^2-12q=0 | | 2b+-8=2 | | 36+7n=6(5n+6)+3n | | 2(8m+3)=54 | | 2y+2=4x-2 | | 4z-7=11-2z | | 3a+2b-8a-3b= | | 7y-9=4y-12 | | 5r+20-7r=-16 |

Equations solver categories