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(x - 3)² = x² + 3
x² - 6x + 9 = x² + 3
-6x = -6
x = 1
ODP. x = 1
x²-6x+9-3=x²
-6x+6=0
x=1
x²-6x+9=3+x²
-6x=3-9
-6x=-6 /:(-6)
x=1