(34-x)(21-x)=600

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Solution for (34-x)(21-x)=600 equation:


Simplifying
(34 + -1x)(21 + -1x) = 600

Multiply (34 + -1x) * (21 + -1x)
(34(21 + -1x) + -1x * (21 + -1x)) = 600
((21 * 34 + -1x * 34) + -1x * (21 + -1x)) = 600
((714 + -34x) + -1x * (21 + -1x)) = 600
(714 + -34x + (21 * -1x + -1x * -1x)) = 600
(714 + -34x + (-21x + 1x2)) = 600

Combine like terms: -34x + -21x = -55x
(714 + -55x + 1x2) = 600

Solving
714 + -55x + 1x2 = 600

Solving for variable 'x'.

Reorder the terms:
714 + -600 + -55x + 1x2 = 600 + -600

Combine like terms: 714 + -600 = 114
114 + -55x + 1x2 = 600 + -600

Combine like terms: 600 + -600 = 0
114 + -55x + 1x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-114' to each side of the equation.
114 + -55x + -114 + x2 = 0 + -114

Reorder the terms:
114 + -114 + -55x + x2 = 0 + -114

Combine like terms: 114 + -114 = 0
0 + -55x + x2 = 0 + -114
-55x + x2 = 0 + -114

Combine like terms: 0 + -114 = -114
-55x + x2 = -114

The x term is -55x.  Take half its coefficient (-27.5).
Square it (756.25) and add it to both sides.

Add '756.25' to each side of the equation.
-55x + 756.25 + x2 = -114 + 756.25

Reorder the terms:
756.25 + -55x + x2 = -114 + 756.25

Combine like terms: -114 + 756.25 = 642.25
756.25 + -55x + x2 = 642.25

Factor a perfect square on the left side:
(x + -27.5)(x + -27.5) = 642.25

Calculate the square root of the right side: 25.342651795

Break this problem into two subproblems by setting 
(x + -27.5) equal to 25.342651795 and -25.342651795.

Subproblem 1

x + -27.5 = 25.342651795 Simplifying x + -27.5 = 25.342651795 Reorder the terms: -27.5 + x = 25.342651795 Solving -27.5 + x = 25.342651795 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '27.5' to each side of the equation. -27.5 + 27.5 + x = 25.342651795 + 27.5 Combine like terms: -27.5 + 27.5 = 0.0 0.0 + x = 25.342651795 + 27.5 x = 25.342651795 + 27.5 Combine like terms: 25.342651795 + 27.5 = 52.842651795 x = 52.842651795 Simplifying x = 52.842651795

Subproblem 2

x + -27.5 = -25.342651795 Simplifying x + -27.5 = -25.342651795 Reorder the terms: -27.5 + x = -25.342651795 Solving -27.5 + x = -25.342651795 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '27.5' to each side of the equation. -27.5 + 27.5 + x = -25.342651795 + 27.5 Combine like terms: -27.5 + 27.5 = 0.0 0.0 + x = -25.342651795 + 27.5 x = -25.342651795 + 27.5 Combine like terms: -25.342651795 + 27.5 = 2.157348205 x = 2.157348205 Simplifying x = 2.157348205

Solution

The solution to the problem is based on the solutions from the subproblems. x = {52.842651795, 2.157348205}

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