16x^2-56x-49=

Simple and best practice solution for 16x^2-56x-49= 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 16x^2-56x-49= equation:


Simplifying
16x2 + -56x + -49 = 0

Reorder the terms:
-49 + -56x + 16x2 = 0

Solving
-49 + -56x + 16x2 = 0

Solving for variable 'x'.

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

Divide each side by '16'.
-3.0625 + -3.5x + x2 = 0

Move the constant term to the right:

Add '3.0625' to each side of the equation.
-3.0625 + -3.5x + 3.0625 + x2 = 0 + 3.0625

Reorder the terms:
-3.0625 + 3.0625 + -3.5x + x2 = 0 + 3.0625

Combine like terms: -3.0625 + 3.0625 = 0.0000
0.0000 + -3.5x + x2 = 0 + 3.0625
-3.5x + x2 = 0 + 3.0625

Combine like terms: 0 + 3.0625 = 3.0625
-3.5x + x2 = 3.0625

The x term is -3.5x.  Take half its coefficient (-1.75).
Square it (3.0625) and add it to both sides.

Add '3.0625' to each side of the equation.
-3.5x + 3.0625 + x2 = 3.0625 + 3.0625

Reorder the terms:
3.0625 + -3.5x + x2 = 3.0625 + 3.0625

Combine like terms: 3.0625 + 3.0625 = 6.125
3.0625 + -3.5x + x2 = 6.125

Factor a perfect square on the left side:
(x + -1.75)(x + -1.75) = 6.125

Calculate the square root of the right side: 2.474873734

Break this problem into two subproblems by setting 
(x + -1.75) equal to 2.474873734 and -2.474873734.

Subproblem 1

x + -1.75 = 2.474873734 Simplifying x + -1.75 = 2.474873734 Reorder the terms: -1.75 + x = 2.474873734 Solving -1.75 + x = 2.474873734 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.75' to each side of the equation. -1.75 + 1.75 + x = 2.474873734 + 1.75 Combine like terms: -1.75 + 1.75 = 0.00 0.00 + x = 2.474873734 + 1.75 x = 2.474873734 + 1.75 Combine like terms: 2.474873734 + 1.75 = 4.224873734 x = 4.224873734 Simplifying x = 4.224873734

Subproblem 2

x + -1.75 = -2.474873734 Simplifying x + -1.75 = -2.474873734 Reorder the terms: -1.75 + x = -2.474873734 Solving -1.75 + x = -2.474873734 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.75' to each side of the equation. -1.75 + 1.75 + x = -2.474873734 + 1.75 Combine like terms: -1.75 + 1.75 = 0.00 0.00 + x = -2.474873734 + 1.75 x = -2.474873734 + 1.75 Combine like terms: -2.474873734 + 1.75 = -0.724873734 x = -0.724873734 Simplifying x = -0.724873734

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.224873734, -0.724873734}

See similar equations:

| -21y=-8 | | n+27=39 | | 3x+4(3x-4)=119 | | -6+8=-10 | | 8x^5-32x^3-27x^2+108=0 | | 2x+6a=6x-2a | | -50=5(2-5a)-3(a-8) | | 3x^2+14xy-49y^2= | | -14=-b+8b | | (2x^2)+16x-1536=0 | | 7x-10=9x+12 | | -5v-3v=-8v | | (2x^2)+4x-96=0 | | 12x-12x-24=10 | | 6x-(10)=8x | | -8v+26=2(v-7) | | 10=14x | | -8v+26=2(v+7) | | 3x-14a=10x+4a | | -16+3x=-24+10x | | 1.25x=-3.25 | | 26x^2+11x-1= | | 16-(x+3)=7-2x | | -2(w+1)=-9w-16 | | X^2+81x-28=0 | | 46-5x=14-9x | | (4x+2y)-(3x-y)= | | -8w+49=5(w+2) | | 5x-1x=9x | | (0.8)(0.8)-0.3= | | 5x-1=9x | | 5(m+2)-2=33-5m |

Equations solver categories