tolong sama caranya?.........

( × - 3 )² + ( × + 1 ) ² = ( x - 2 )² + ( x + 3 )²
x² - 6x + 9 + x² + 2x + 1 = x² - 4x + 4 + ( x+ 3) ²
-6x + 9 + x² + 2x + 1 = -4x + 4 + x² + 6x + 9
-6x + 2x + 1 = -4x + 4 + 6x
-4x + 1 = 2x + 4
-4x - 2x = 4 - 1
-6x = 3
x = - 3 / 6
x = - 1 / 2

( x - 3)² + ( x + 1 )² = ( x - 2)² + ( x + 3)²
=> x² + 2x . 1 + 1² + x² + 2x . (-3) + (-3)² = x² + 2x . 3 + 3² + x² + 2x . (-2) + (-2)²
= > 1 + 9 + 2x² + 2x + (-6)x = 9 + 4 + 2x² + 6x + (-4x)
=> 2x² - 4x + 10 = 2x² + 2x + 13
=> 2x² - 4x = 2x² + 2x + 3
=> -4x = 2x + 3
=> -6x = 3
=> x = - ½

semoga membantu ^_^