(x*x)-(19-x)(19-x)=38

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Solution for (x*x)-(19-x)(19-x)=38 equation:


Simplifying
(x * x) + -1(19 + -1x)(19 + -1x) = 38

Multiply x * x
(x2) + -1(19 + -1x)(19 + -1x) = 38
x2 + -1(19 + -1x)(19 + -1x) = 38

Multiply (19 + -1x) * (19 + -1x)
x2 + -1(19(19 + -1x) + -1x * (19 + -1x)) = 38
x2 + -1((19 * 19 + -1x * 19) + -1x * (19 + -1x)) = 38
x2 + -1((361 + -19x) + -1x * (19 + -1x)) = 38
x2 + -1(361 + -19x + (19 * -1x + -1x * -1x)) = 38
x2 + -1(361 + -19x + (-19x + 1x2)) = 38

Combine like terms: -19x + -19x = -38x
x2 + -1(361 + -38x + 1x2) = 38
x2 + (361 * -1 + -38x * -1 + 1x2 * -1) = 38
x2 + (-361 + 38x + -1x2) = 38

Reorder the terms:
-361 + 38x + x2 + -1x2 = 38

Combine like terms: x2 + -1x2 = 0
-361 + 38x + 0 = 38
-361 + 38x = 38

Solving
-361 + 38x = 38

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '361' to each side of the equation.
-361 + 361 + 38x = 38 + 361

Combine like terms: -361 + 361 = 0
0 + 38x = 38 + 361
38x = 38 + 361

Combine like terms: 38 + 361 = 399
38x = 399

Divide each side by '38'.
x = 10.5

Simplifying
x = 10.5

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