Tuesday 4 July 2017

ALGEBRA 3


Expand (2x + 7)(x - 2)

Solution

= (2x + 7)(x - 2)

= x(2x + 7)-2(2x + 7)

 = 2x² +7x - 4x - 14

 = 2x² - 3x – 14 

TRY THIS…………………


Expand (6x + 5)(x - 3)

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