Question

solve x^2-9=0. please answer my question​

Answer 1

Answer:

x² - 9 = 0

x ² - 3 ²

( x + 3 ) ( x - 3) = 0

x = -3 or 3

please mark as brainliest

Answer 2

Step-by-step explanation:

the sign plus and minus denote that 9 can either be positive or negative we don't know so we denote plus minus sign