Question

if one root of quadratic equations 2x²+px-4=0 is 2, then the value of p will be​

Answer 1

Answer:

$p = - 2.$

Step-by-step explanation:

$2 {x}^{2} + px - 4 = 0 \\ \\ put \: x = 2 \\ \\ 8 + 2p - 4 = 0 \\ \\ 2p + 4 = 0 \\ \\ p = - 2$