On simplifying (3 + ) (3 − ), we get (a) 8 (b) 4 (c) 2 (d)

Step-by-step solution

(3 + )(3 – ) = (3) 2 – ( ) 2 [ 2235 (a + b)(a – b) = a 2 – b 2 ] = 9 – 5 = 4 ∴ Correct option is (b).