Question

8p²-18q² , Factorise​

Answer 1

Step-by-step explanation:

a² - b² = (a - b) * (a + b

a² = 4p² => a = 2p

and

b² = 9q² => b = 3q

→8p² - 18q² = - 2* (4p² - 9q²)

= 2 * (2p -3q) * (2p + 3q)

hope it helps !!

Answer 2

a² - b² = (a - b) * (a + b)

a² = 4p² => a = 2p

and  

b² = 9q² => b = 3q

=>

8p² - 18q² = -  2* (4p² - 9q²) = 2 * (2p -3q) * (2p + 3q)