Question

creat a square equation whose roots are 9 and -9
step by step explanation plz
plz give ans​

Answer 1

Answer:

x=9 or x=-9

x-9=0 or x+9=0

(x-9)(x+9)=0

x(x+9)-9(x+9)=0

x²+9x-9x-81=0

x²-81=0