Question

which identing can be used to factorise
4x² - 9y² ?​

Answer 1

Answer:

a^2 -b^2 =(a+b)(a-b)

Step-by-step explanation:

4x^2-9y^2

(4x+9y)*(4x-9y)

Answer 2

Answer:

a^2 - b^2= (a+b)(a-b)

Step-by-step explanation:

4x^2 - 9y^2

= (2x)^2 - (3y)^2

=(2x + 3y)(2x - 3y)                         [a^2 - b^2 = (a+b)(a-b)]