Question

if p=-20 then find the value of p square+2p-5

Answer 1

$p = - 20 \\ {p}^{2} + 2p - 5 = { - 20}^{2} + 2 \times (- 20) - 5 \\ = 400 - 40 - 5 \\ = 355$

Hope this will help....

Answer 2

The required answer is:-