x^2-30x+49=0

Simple and best practice solution for x^2-30x+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^2-30x+49=0 equation:


Simplifying
x2 + -30x + 49 = 0

Reorder the terms:
49 + -30x + x2 = 0

Solving
49 + -30x + 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 + -30x + -49 + x2 = 0 + -49

Reorder the terms:
49 + -49 + -30x + x2 = 0 + -49

Combine like terms: 49 + -49 = 0
0 + -30x + x2 = 0 + -49
-30x + x2 = 0 + -49

Combine like terms: 0 + -49 = -49
-30x + x2 = -49

The x term is -30x.  Take half its coefficient (-15).
Square it (225) and add it to both sides.

Add '225' to each side of the equation.
-30x + 225 + x2 = -49 + 225

Reorder the terms:
225 + -30x + x2 = -49 + 225

Combine like terms: -49 + 225 = 176
225 + -30x + x2 = 176

Factor a perfect square on the left side:
(x + -15)(x + -15) = 176

Calculate the square root of the right side: 13.266499161

Break this problem into two subproblems by setting 
(x + -15) equal to 13.266499161 and -13.266499161.

Subproblem 1

x + -15 = 13.266499161 Simplifying x + -15 = 13.266499161 Reorder the terms: -15 + x = 13.266499161 Solving -15 + x = 13.266499161 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '15' to each side of the equation. -15 + 15 + x = 13.266499161 + 15 Combine like terms: -15 + 15 = 0 0 + x = 13.266499161 + 15 x = 13.266499161 + 15 Combine like terms: 13.266499161 + 15 = 28.266499161 x = 28.266499161 Simplifying x = 28.266499161

Subproblem 2

x + -15 = -13.266499161 Simplifying x + -15 = -13.266499161 Reorder the terms: -15 + x = -13.266499161 Solving -15 + x = -13.266499161 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '15' to each side of the equation. -15 + 15 + x = -13.266499161 + 15 Combine like terms: -15 + 15 = 0 0 + x = -13.266499161 + 15 x = -13.266499161 + 15 Combine like terms: -13.266499161 + 15 = 1.733500839 x = 1.733500839 Simplifying x = 1.733500839

Solution

The solution to the problem is based on the solutions from the subproblems. x = {28.266499161, 1.733500839}

See similar equations:

| 50=4x*(6-x) | | 0.74+0.12t=2.72t-1.21 | | x/5=w+y | | (2p-3)p= | | 3.4x+42.5=14.3-10.7x | | 9/5+2/5x=89/30+7/6x+5/6 | | 10/3+1/4t=6 | | 134-(6x+13)=6(x+5)+x | | 2x^2+kx-3x+3k-5=0 | | 1+8x=4(2x+3) | | -8-y+17-10y=0 | | 5r+6=15r+8 | | 3(b+7)=3(b-4) | | 4x/2x+8 | | 6x-14-13x+26=0 | | d+2d=3d | | 4.4+1.3n=1.28 | | -6x-15=-129 | | (4x2+x-11)/(2x+3) | | 6x+14=-25-7 | | 5x-11=42 | | -95=5+10x | | n*n*n*n*n= | | 4+y+y^2=7-y(2-y) | | k*3= | | -9/10+9 | | 8+6x=55+x | | 3p+4q+p+2q= | | 9+9*6= | | s(s+2)+5=3+s^2 | | -2/5n=-4 | | 6z-(9-3z)=6-3(z+2) |

Equations solver categories