x^2+7x+10=315

Simple and best practice solution for x^2+7x+10=315 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^2+7x+10=315 equation:


Simplifying
x2 + 7x + 10 = 315

Reorder the terms:
10 + 7x + x2 = 315

Solving
10 + 7x + x2 = 315

Solving for variable 'x'.

Reorder the terms:
10 + -315 + 7x + x2 = 315 + -315

Combine like terms: 10 + -315 = -305
-305 + 7x + x2 = 315 + -315

Combine like terms: 315 + -315 = 0
-305 + 7x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '305' to each side of the equation.
-305 + 7x + 305 + x2 = 0 + 305

Reorder the terms:
-305 + 305 + 7x + x2 = 0 + 305

Combine like terms: -305 + 305 = 0
0 + 7x + x2 = 0 + 305
7x + x2 = 0 + 305

Combine like terms: 0 + 305 = 305
7x + x2 = 305

The x term is 7x.  Take half its coefficient (3.5).
Square it (12.25) and add it to both sides.

Add '12.25' to each side of the equation.
7x + 12.25 + x2 = 305 + 12.25

Reorder the terms:
12.25 + 7x + x2 = 305 + 12.25

Combine like terms: 305 + 12.25 = 317.25
12.25 + 7x + x2 = 317.25

Factor a perfect square on the left side:
(x + 3.5)(x + 3.5) = 317.25

Calculate the square root of the right side: 17.811513131

Break this problem into two subproblems by setting 
(x + 3.5) equal to 17.811513131 and -17.811513131.

Subproblem 1

x + 3.5 = 17.811513131 Simplifying x + 3.5 = 17.811513131 Reorder the terms: 3.5 + x = 17.811513131 Solving 3.5 + x = 17.811513131 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.5' to each side of the equation. 3.5 + -3.5 + x = 17.811513131 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + x = 17.811513131 + -3.5 x = 17.811513131 + -3.5 Combine like terms: 17.811513131 + -3.5 = 14.311513131 x = 14.311513131 Simplifying x = 14.311513131

Subproblem 2

x + 3.5 = -17.811513131 Simplifying x + 3.5 = -17.811513131 Reorder the terms: 3.5 + x = -17.811513131 Solving 3.5 + x = -17.811513131 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.5' to each side of the equation. 3.5 + -3.5 + x = -17.811513131 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + x = -17.811513131 + -3.5 x = -17.811513131 + -3.5 Combine like terms: -17.811513131 + -3.5 = -21.311513131 x = -21.311513131 Simplifying x = -21.311513131

Solution

The solution to the problem is based on the solutions from the subproblems. x = {14.311513131, -21.311513131}

See similar equations:

| 10*3*x^2-7*3-12= | | 3(3x+1)=14x+1-5x+2 | | 9ex=18 | | 15/2=x/8 | | 10*3x^2-7*3-12= | | 25/6=400/x | | 2(3x+1)+5=7x+3 | | 10*6-7*3-12= | | 10000/25= | | 25*500= | | -21r^4s^3-27r^2s^4+24rs^5= | | 1-x/5=4 | | X+10=1.10 | | X-1/33 | | 245s^2-320=0 | | (5x+6)(x+1)=-(11x+2) | | 63=-3x+9 | | 4e^3x-2=8 | | 3(2y-4)=-18 | | 3(3x+1)+4=10x+1 | | 5b^2+22b-15=0 | | (2-x)(2x-5)=0 | | 3.5((3*pi)/2) | | 6x-30=9x | | y=4x+4x | | y=7(86x-2)-4 | | X+17+x-8+x=126 | | -8x+2=3x-1 | | -7(-1+3a)=15-25a | | 5(x-4)=-9(x+2)+46 | | -5(t-9)-(t+3)=3 | | 28=-4n-60 |

Equations solver categories