1.

If a+b=21 ,ab=108 find a square+ b square

Answer»

Hey!!!!

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We have

=> a + B = 21

and

=> AB = 108

We will use the given PART

=> a + b = 21

Square both sides

=> (a + b)² = 441

=> a² + b² + 2AB = 441

Replacing value of ab

=> a² + b² + 2(108) = 441

=> a² + b² = 441 - 216

=> a² + b² = 225

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Hope this helps you


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