x^2+12x-74=0

Simple and best practice solution for x^2+12x-74=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 x^2+12x-74=0 equation:


Simplifying
x2 + 12x + -74 = 0

Reorder the terms:
-74 + 12x + x2 = 0

Solving
-74 + 12x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '74' to each side of the equation.
-74 + 12x + 74 + x2 = 0 + 74

Reorder the terms:
-74 + 74 + 12x + x2 = 0 + 74

Combine like terms: -74 + 74 = 0
0 + 12x + x2 = 0 + 74
12x + x2 = 0 + 74

Combine like terms: 0 + 74 = 74
12x + x2 = 74

The x term is 12x.  Take half its coefficient (6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
12x + 36 + x2 = 74 + 36

Reorder the terms:
36 + 12x + x2 = 74 + 36

Combine like terms: 74 + 36 = 110
36 + 12x + x2 = 110

Factor a perfect square on the left side:
(x + 6)(x + 6) = 110

Calculate the square root of the right side: 10.488088482

Break this problem into two subproblems by setting 
(x + 6) equal to 10.488088482 and -10.488088482.

Subproblem 1

x + 6 = 10.488088482 Simplifying x + 6 = 10.488088482 Reorder the terms: 6 + x = 10.488088482 Solving 6 + x = 10.488088482 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = 10.488088482 + -6 Combine like terms: 6 + -6 = 0 0 + x = 10.488088482 + -6 x = 10.488088482 + -6 Combine like terms: 10.488088482 + -6 = 4.488088482 x = 4.488088482 Simplifying x = 4.488088482

Subproblem 2

x + 6 = -10.488088482 Simplifying x + 6 = -10.488088482 Reorder the terms: 6 + x = -10.488088482 Solving 6 + x = -10.488088482 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = -10.488088482 + -6 Combine like terms: 6 + -6 = 0 0 + x = -10.488088482 + -6 x = -10.488088482 + -6 Combine like terms: -10.488088482 + -6 = -16.488088482 x = -16.488088482 Simplifying x = -16.488088482

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.488088482, -16.488088482}

See similar equations:

| 12=10x-4-12x | | 10=t^2-8t | | 100s+20=460 | | A^2+23a-42=0 | | -8a(3-4b+7c)= | | 2(x-5)=4x-2(x+5)-1 | | 4*-z= | | H(t)=-16t^2+vt+h | | 5w+15=-3 | | 4*w= | | 11y-9y+15=11 | | 3x^4-10x^3-2x^2-6=0 | | 4a^2-5=10 | | 3n-12=9n | | 5x^2+10x=50 | | -3t*6= | | -2x^2-9x+10=0 | | 9x+12y=747 | | 88x-81=4x(5*2-10)-81 | | 4(x-3)=8-5x | | 2x+(3x^2-x-1)=1 | | C=20+5h | | 2(x+5)=1x-8 | | -1(x^2+6x+5)=0 | | 72=8a | | 10+2z=58-6z | | 5+2(1+2(2x-2))=6(x+5) | | =12x^2-3x-4x-1 | | 8t+30=6 | | 2sin(3x)+cos(2x)=1 | | 5+2x=2+6 | | 4s+2=20 |

Equations solver categories