Wednesday, 6 July 2022

EXPONENTIALS F1

 

Simplify (7a)2 - 3a2

 

Solution

 

= (7a)2 - 11a2    

 

= 72.a2 - 11a2               Since (mn)2 =m2 . n2

 

= 49a2 - 11a2   {since the square number of 7 is 49}

 

= 38a2

 

TRY THIS………………

 

Simplify (9f)2 – 50f2.

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