Question

what are the roots of quadratic equation (x-9) ( x+4) =0​

Answer 1

Answer:

9,-4

Step-by-step explanation:

given (x-9) ( x+4) =0​

=> either x-9 = 0   or  x+4 = 0

=>              x = 9     or x=-4

so, 9 and -4 are the roots