A) (x -2)² - 36
= ( x - 2 - 6) × ( x - 2 + 6 )
= ( x - 8 ) × ( x + 4 )
b) 1 - (2x + 3)²
=( 1 - (2x + 3)) × ( 1 + (2x + 3 ))
= ( 1 - 2x - 3 ) ×( 1 + 2x + 3)
=( -2 - 2x ) × ( 4 + 2x )
=-2 × 2 ( 1 + x ) × (2 + x)
=-4 (1 + x ) × ( 2 + x)
c) ( 3x - 2) ² - (x + 3)²
= (3x - 2 - x - 3 ) × ( 3x - 2 + x + 3 )
= ( 2x - 5 ) × ( 4x + 1)
d) (x + 5)² - ( 2x - 4) ²
= ( x + 5 - 2x + 4 ) × ( x + 5 + 2x - 4 )
= (-x + 9) × ( 3x + 1)
