Wednesday 28 October 2015

ALGEBRA 1




Expand 5x(4x – 5)

Solution

= 5x(4x – 5)

= (5x x 4x) – (5x x 5)

= 20x2 – 25x
 
Hence 5x(4x – 5) = 20x2 – 25x

TRY THIS……………

Expand 6a(7a – 4)

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