Question

Factorise: 25x^2 -(x^2 - 36)^2

Answer 1

25x² -(x² - 36)²

= (5x)² -(x²-36)²

=(5x+x²+-36) (5x-x²+36)

= (x²+5x-36) (36 +5x+x²)

= (x²+9x-4x-36) (36+9x-4x-x²)

= [x(x+9)-4(x+9)] [9(4+x) -x(4+x)]

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

Answer 2

Answer:

check the attachment (◍•ᴗ•◍)❤