Answer:
x = 5 ± [tex]\sqrt{17}[/tex]
Step-by-step explanation:
Given
x² - 10x + 25 = 17 ← left side is a perfect square, thus
(x - 5)² = 17 ( take the square root of both sides )
x - 5 = ± [tex]\sqrt{17}[/tex] ( add 5 to both sides )
x = 5 ± [tex]\sqrt{17}[/tex]
Thus
x = 5 - [tex]\sqrt{17}[/tex]
x = 5 + [tex]\sqrt{17}[/tex]