Sunday, 3 September 2017

EXPAND 2


Expand (y – 7) (y – 16)

solution

= (y – 7) (y – 16)

= y (y – 16) – 7 (y – 16)

= y2 – 16y – 7y + 112 

= y2 – 23y + 112  since (– 16y – 7y) = – 23y

= y2 – 23y + 112 answer

TRY THIS………..


Expand (c – 6) (c – 11)

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