Answer:
a = - 2 ± [tex]\sqrt{10}[/tex]
Step-by-step explanation:
Given
(a + 2)² = 2(3 + 2), that is
(a + 2)² = 2(5) = 10 ← take the square root of both sides
a + 2 = ± [tex]\sqrt{10}[/tex] ( subtract 2 from both sides )
a = - 2 ± [tex]\sqrt{10}[/tex]
