Thursday, 24 April 2014

ALGEBRA D1



Expand 2x(4x – 5).

Solution

= 2x(4x – 5)

= (2x x 4x) – (2x x 5)

= 8x2 – 10x
 
Hence 2x(4x – 5) = 8x2 – 10x


TRY THIS……………

Expand 3a(7a – 4)

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