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(4√3 + 3√2)(4√3 - 3√2) = ?????

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by vineeshp » Fri Jul 15, 2011 7:03 am
Answer is correct.

How did you solve? That is important. :)
Vineesh,
Just telling you what I know and think. I am not the expert. :)
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by MBA.Aspirant » Fri Jul 15, 2011 7:34 am
(4√3 + 3√2)(4√3 - 3√2)

48 - 12√6 + 12√6 - 18

= 30
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by Anurag@Gurome » Fri Jul 15, 2011 10:18 am
Use the formula : (a - b)(a + b) = (a² - b²)

Hence, (4√3 + 3√2)(4√3 - 3√2) = (4√3)² - (3√2)² = 48 - 18 = 30
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by mayank.arora » Fri Jul 15, 2011 10:21 am
I used the simple arithmetic formula,

(a+b)(a-b)= a^2 - b^2

The answer comes to 30 too... please lemme know if there's anything which consumes less time!
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