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രണ്ട് സംഖ്യകളുടെ ഗുണനഫലം ഫലം 120. ഇത് അവയുടെ വർഗങ്ങളുടെ തുക 289 ആയാൽ സംഖ്യകളുടെ തുക ?

A23

B20

C169

D21

Answer:

A. 23

Read Explanation:

ab=120 , a^2+b^2=289 ( a+b)^2 = a^2+b^2+2ab , 289+ 2x120 = 529 so a+ b = root of 529 = 23

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