(x-5)(x)=28

Simple and best practice solution for (x-5)(x)=28 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-5)(x)=28 equation:


Simplifying
(x + -5)(x) = 28

Reorder the terms:
(-5 + x)(x) = 28

Reorder the terms for easier multiplication:
x(-5 + x) = 28
(-5 * x + x * x) = 28
(-5x + x2) = 28

Solving
-5x + x2 = 28

Solving for variable 'x'.

Reorder the terms:
-28 + -5x + x2 = 28 + -28

Combine like terms: 28 + -28 = 0
-28 + -5x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '28' to each side of the equation.
-28 + -5x + 28 + x2 = 0 + 28

Reorder the terms:
-28 + 28 + -5x + x2 = 0 + 28

Combine like terms: -28 + 28 = 0
0 + -5x + x2 = 0 + 28
-5x + x2 = 0 + 28

Combine like terms: 0 + 28 = 28
-5x + x2 = 28

The x term is -5x.  Take half its coefficient (-2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
-5x + 6.25 + x2 = 28 + 6.25

Reorder the terms:
6.25 + -5x + x2 = 28 + 6.25

Combine like terms: 28 + 6.25 = 34.25
6.25 + -5x + x2 = 34.25

Factor a perfect square on the left side:
(x + -2.5)(x + -2.5) = 34.25

Calculate the square root of the right side: 5.852349955

Break this problem into two subproblems by setting 
(x + -2.5) equal to 5.852349955 and -5.852349955.

Subproblem 1

x + -2.5 = 5.852349955 Simplifying x + -2.5 = 5.852349955 Reorder the terms: -2.5 + x = 5.852349955 Solving -2.5 + x = 5.852349955 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = 5.852349955 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = 5.852349955 + 2.5 x = 5.852349955 + 2.5 Combine like terms: 5.852349955 + 2.5 = 8.352349955 x = 8.352349955 Simplifying x = 8.352349955

Subproblem 2

x + -2.5 = -5.852349955 Simplifying x + -2.5 = -5.852349955 Reorder the terms: -2.5 + x = -5.852349955 Solving -2.5 + x = -5.852349955 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = -5.852349955 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = -5.852349955 + 2.5 x = -5.852349955 + 2.5 Combine like terms: -5.852349955 + 2.5 = -3.352349955 x = -3.352349955 Simplifying x = -3.352349955

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.352349955, -3.352349955}

See similar equations:

| 59.96+.15x=69.96+.11x | | 2b+3+2n+2n=477 | | N=-13-8 | | 3ln(x+2)-2ln(2x+3)=1 | | 18+.13x=.17x | | X+837=531 | | p^2+2p(1-p)=0.5775 | | X-377=-634 | | -639+g=-270 | | 5x+-3=18 | | 7r=14 | | (2x/7)*(1/7) | | D+-462=196 | | 6(1/16) | | 5(2x+6)=43 | | 4g=3.2 | | n+n+3+2n+1=5n+2 | | x^2-49=36 | | 5(2x-6)=43 | | .80x=55+.30x | | y=10x-10 | | 627+x=1552 | | 13x+23=3x-43 | | D-940=-728 | | (b^1/2*a^4)^-5/3= | | 5v-13=57 | | 18+c=-18+7c | | 7r=-4 | | 3=7+2y | | Y=0.50+35 | | -14=3w-5 | | $9.75/24=$5.85/n |

Equations solver categories