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(2\sqrt(5)+3\sqrt(7))^(2) show your work

User ReneGAED
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(a+b)^2=a^2+2ab+b^2\\\\ (2\sqrt5+3\sqrt7)^2=4\cdot 5+12√(35)+9\cdot 7=83+12√(35)
User Tomaz Tekavec
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