Tuesday 9 July 2024

EXPONENTIALS G7

 

If y5 = 11, find y10 - 4y5.

 

Solution

 

= y10- 4y5.

 

= (y5)2- 4y5

 

= (11)– (4 x 11)     remember y5 = 11

 

= (11 x 11) – (4 x 11)

 

= 121 – 44

 

= 77

 

Hence y10- 4y5= 77.

 

TRY THIS……………….

 

 If  w9 = 5, find w27- 5w9.


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