Aptitude - Simplification - Discussion

Discussion Forum : Simplification - General Questions (Q.No. 4)

Simplification

If a - b = 3 and a² + b² = 29, find the value of ab.

Answer: Option

Explanation:

2ab = (a² + b²) - (a - b)²

= 29 - 9 = 20

ab = 10.

Discussion:

107 comments Page 11 of 11.

Bahisht said: 8 years ago

Your Method is easy @Satish.

Ram said: 1 decade ago

(a+b)^2-(a-b)^2 = 4ab.

Rah1 said: 9 years ago

Awesome answer @Ram.

Sakshi said: 7 years ago

Thanks @Satish.

Avi said: 5 years ago

Thanks @Satish.

(2)

Kumar said: 1 decade ago

It's correct.

Varshith said: 5 years ago

Thanks @Janu.

(2)

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