Question

check whether -5 and 5 are zero of px=x²-25​

Answer 1

Answer:

at x=5

p(5)=

$at \: x = 5 \\ p(5) = {5 }^{2} - 25 = 0 \\ AT \: x = - 5 \\ p( - 5) = - { - 5}^{2} - 25 = 0$