Question

(x + 3) (x - 3) = 27​

Answer 1

Answer:

2x-3x+3x-9= 27

2x-9=27

2x=27-9

x=18/2

x=9

Answer 2

Answer:

6

Step-by-step explanation:

( x + 3 ) ( x - 3 ) = 27

Formula : -

( a + b ) ( a - b ) = a² - b²

Here,

a = x

b = 3

( x + 3 ) ( x - 3 ) = 27

x² - 3² = 27

x² - 9 = 27

x² = 27 + 9

x² = 36

x = √36

x = 6