Question

If the roots of px² + qx + 2 = 0 are reciprocal of each other, then:

Options

• p = 0

• p = −2

• p = ±2

• p = 2

Answer 1

p = 2

Explanation:

Here α = `1/β`

∴ αβ = 1

⇒ `2/"p"` = 1

∴ p = 2