2x^2-28x+49=0

Simple and best practice solution for 2x^2-28x+49=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 2x^2-28x+49=0 equation:


Simplifying
2x2 + -28x + 49 = 0

Reorder the terms:
49 + -28x + 2x2 = 0

Solving
49 + -28x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
24.5 + -14x + x2 = 0

Move the constant term to the right:

Add '-24.5' to each side of the equation.
24.5 + -14x + -24.5 + x2 = 0 + -24.5

Reorder the terms:
24.5 + -24.5 + -14x + x2 = 0 + -24.5

Combine like terms: 24.5 + -24.5 = 0.0
0.0 + -14x + x2 = 0 + -24.5
-14x + x2 = 0 + -24.5

Combine like terms: 0 + -24.5 = -24.5
-14x + x2 = -24.5

The x term is -14x.  Take half its coefficient (-7).
Square it (49) and add it to both sides.

Add '49' to each side of the equation.
-14x + 49 + x2 = -24.5 + 49

Reorder the terms:
49 + -14x + x2 = -24.5 + 49

Combine like terms: -24.5 + 49 = 24.5
49 + -14x + x2 = 24.5

Factor a perfect square on the left side:
(x + -7)(x + -7) = 24.5

Calculate the square root of the right side: 4.949747468

Break this problem into two subproblems by setting 
(x + -7) equal to 4.949747468 and -4.949747468.

Subproblem 1

x + -7 = 4.949747468 Simplifying x + -7 = 4.949747468 Reorder the terms: -7 + x = 4.949747468 Solving -7 + x = 4.949747468 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + x = 4.949747468 + 7 Combine like terms: -7 + 7 = 0 0 + x = 4.949747468 + 7 x = 4.949747468 + 7 Combine like terms: 4.949747468 + 7 = 11.949747468 x = 11.949747468 Simplifying x = 11.949747468

Subproblem 2

x + -7 = -4.949747468 Simplifying x + -7 = -4.949747468 Reorder the terms: -7 + x = -4.949747468 Solving -7 + x = -4.949747468 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + x = -4.949747468 + 7 Combine like terms: -7 + 7 = 0 0 + x = -4.949747468 + 7 x = -4.949747468 + 7 Combine like terms: -4.949747468 + 7 = 2.050252532 x = 2.050252532 Simplifying x = 2.050252532

Solution

The solution to the problem is based on the solutions from the subproblems. x = {11.949747468, 2.050252532}

See similar equations:

| 10=p+6.4 | | 10=p+6.4 | | 2.3=n+1 | | 6.5+a=12.3 | | 138+x+57=218 | | 0.5(x^4-3)+12= | | n-2.1=4.3 | | -52+5=-127 | | 6=58+4x | | f(x)=4x^3-x | | y=x^2-11x+2 | | x+10+4x+40=10x-120 | | w+6=-10 | | 7x-5=4x+11 | | 7x-5=4x+11 | | 7x-5=4x+11 | | 6w=4w+8 | | 0.15n=72.5 | | -2q+63=47 | | 6-4x=4-2x | | Y+1.8=-6 | | 3x-y=50 | | Y+1.6=-6 | | 72c-81=-351 | | 3y-5=7-2y | | 5x^2-6xy+5y^2=4 | | 8+4x=-10 | | 3x^2-10x=2 | | x^2-3xy+2y^2+y=1 | | 12+3(-2y-4)=5 | | y=1.6+8 | | 65-2x=7x+19 |

Equations solver categories