Answer:
two real solutions
Step-by-step explanation:
given the equation
y² - 40 = 60 ( add 40 to both sides )
y² = 100 ( take square root of both sides )
[tex]\sqrt{y^2}[/tex] = ± [tex]\sqrt{100}[/tex] , that is
y = ± 10
Then the equation has two real solutions : y = - 10, y = 10
