Question

Given that a² + b² = 18 and 4ab = 52, find the value of 3(a+b)² .

Answer 1

Step-by-step explanation:

a²+b²=18 hence 4ab=52

therefore ab=52/4

hence ab=13

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☜☆☞ now we have to find the value of 3(a+b)²

☜☆☞(a+b)² can be written as a²+b²+2ab...

now put value of (a²+b)² and ab in the equation 3(a+b)²

3(a²+b²+2ab)

3(18+2(13) )

3(18+26)

3(44)

132 is the correct answer

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