Question

factorise 16x²-81 guys answer it fast it's urgent ​

Answer 1

Answer:

x = ±(9/4)

Step-by-step explanation:

16x²-81 = 0

16x² = 81

x² = 81/16

x = √81/16

x = ±9/4

Answer 2

(4x)^2-(9)^2

(4x-9)(4x+9)