Question

What are the roots of y = x² – 3x – 10? O-3 and -10 0-2 and 5 O2 and -5 O3 and 10​

Answer 1

x = - 2 , 5

Explanation:

to find the roots let y = 0 , that is

x² - 3x - 10 = 0 ← in standard form

(x + 2)(x - 5) = 0 ← in factored form

equate each factor to zero and solve for x

x + 2 = 0 ⇒ x = - 2

x - 5 = 0 ⇒ x = 5