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Q:

यदि $${a+b=10}$$  तथा $$ \sqrt{a\over b}-13=-\sqrt{b\over a}-11$$,  हैं, तो $${3ab+4a^2+5b^2}$$ का मान क्या है?

  • 1
    300
  • 2
    600
  • 3
    750
  • 4
    450
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Answer : 1. "300"

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