Question

what values of x would make following expression undefined 45\(9-x^2)

Answer 1

do you know a fraction when is undefined ?

Answer 2

so when the denominator is equal zero ,ok ? so in this case when will be the denominator zero ,for what value of x ?

Answer 3

so you can calcule it than make equale zero the denominator

9-x^2 = 0

add to the both sides x^2

9 = x^2 make squarroot from both sides and will get

x_1,2 = +/- 3

hope this will help you and this is understandably