If a+ b = √ 3 and a-b= √ 2 what is the value of 8ab(a2+b2)?
Solution
Correct Answer: Option C
8ab(a2+b2)= 4ab X2(a2+b2) ={ (a+b)2-(a-b)2} {(a+b)2+(a-b)2} =(3-2)(3+2)=5
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