Question

Factorise 63a2 – 112b2 with solution​

Answer 1

Answer:

63a² – 112b²

( 7 × 3 × 3 × a × a ) - ( 2 × 2 × 7 × 2 × 2 × b × b )

7 ( 9a² - 16b²)

7 [ ( 3a ) ² - ( 4b )² ]

7 ( 3a + 4b ) ( 3a - 4b)