Qz
2x ( 2 - 1y ) = ...
.
2x ( 2 - 1y ) = ...
.
Penyelesaian :
= 2x ( 2 - 1y )
= ( 2x · 2 ) - ( 2x · 1y )
= ( 2 × 2 )x - ( 2 × 1 )xy
= 4x - ( 2 × 1 )xy
= 4x - 2xy
_ _ _ _ _ _ _ _ _ _ _ _ _
= 2x ( 2 - 1y )
= ( 2x · 2 ) - ( 2x · 1y )
= ( 2 × 2 )x - ( 2 × 1 )xy
= 4x - ( 2 × 1 )xy
= 4x - 2xy
_ _ _ _ _ _ _ _ _ _ _ _ _