x^2-15x+49=0

Simple and best practice solution for x^2-15x+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 x^2-15x+49=0 equation:


Simplifying
x2 + -15x + 49 = 0

Reorder the terms:
49 + -15x + x2 = 0

Solving
49 + -15x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-49' to each side of the equation.
49 + -15x + -49 + x2 = 0 + -49

Reorder the terms:
49 + -49 + -15x + x2 = 0 + -49

Combine like terms: 49 + -49 = 0
0 + -15x + x2 = 0 + -49
-15x + x2 = 0 + -49

Combine like terms: 0 + -49 = -49
-15x + x2 = -49

The x term is -15x.  Take half its coefficient (-7.5).
Square it (56.25) and add it to both sides.

Add '56.25' to each side of the equation.
-15x + 56.25 + x2 = -49 + 56.25

Reorder the terms:
56.25 + -15x + x2 = -49 + 56.25

Combine like terms: -49 + 56.25 = 7.25
56.25 + -15x + x2 = 7.25

Factor a perfect square on the left side:
(x + -7.5)(x + -7.5) = 7.25

Calculate the square root of the right side: 2.692582404

Break this problem into two subproblems by setting 
(x + -7.5) equal to 2.692582404 and -2.692582404.

Subproblem 1

x + -7.5 = 2.692582404 Simplifying x + -7.5 = 2.692582404 Reorder the terms: -7.5 + x = 2.692582404 Solving -7.5 + x = 2.692582404 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7.5' to each side of the equation. -7.5 + 7.5 + x = 2.692582404 + 7.5 Combine like terms: -7.5 + 7.5 = 0.0 0.0 + x = 2.692582404 + 7.5 x = 2.692582404 + 7.5 Combine like terms: 2.692582404 + 7.5 = 10.192582404 x = 10.192582404 Simplifying x = 10.192582404

Subproblem 2

x + -7.5 = -2.692582404 Simplifying x + -7.5 = -2.692582404 Reorder the terms: -7.5 + x = -2.692582404 Solving -7.5 + x = -2.692582404 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7.5' to each side of the equation. -7.5 + 7.5 + x = -2.692582404 + 7.5 Combine like terms: -7.5 + 7.5 = 0.0 0.0 + x = -2.692582404 + 7.5 x = -2.692582404 + 7.5 Combine like terms: -2.692582404 + 7.5 = 4.807417596 x = 4.807417596 Simplifying x = 4.807417596

Solution

The solution to the problem is based on the solutions from the subproblems. x = {10.192582404, 4.807417596}

See similar equations:

| y=-2.18*5.34+944.68 | | 3(q-5)=2(9+5) | | y=-2.18*5.35+944.68 | | (5n-7)+n=113 | | 16x^2+16y^2+64x-8y+60=0 | | y=-2.18*5.3+944.68 | | 3y+2=-2y+7 | | y=-2.18*5.4+944.68 | | y=-2.18*5.2+944.68 | | 7p+7=2+2p | | y=-2.18*4.5+944.68 | | (x+5)y+2y= | | y=-2.18*5+944.68 | | 4x^2+6x+2=2x+5 | | -64+11y+8=4(4y-3)-4 | | y=-2.18*6+944.68 | | y=-2.18*4+944.68 | | 10c+5c+6d+d= | | 9(x^2+6x+6)=0 | | y=-2.18*2+944.68 | | 7y+3-4y=6 | | n+(n+9)=67 | | -(a+8)=1 | | 3(r+2s)-3r= | | 3x=5x-4(x-3) | | 5x=y+3z | | 32+3x=-8(x+7) | | x=0.85x+0.1275 | | (3n-6)+n=42 | | 25y^2-4=0 | | 6x+7(y+x)= | | x^4+y^4=x^2+y^2 |

Equations solver categories