Question

find the square of 3+2√5
please fast....​

Answer 1

Answer:

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Answer 2

$(3 + 2 \sqrt{5} )^{2} \\ \\ {(a + b)}^{2} = {a}^{2} + 2ab + {b}^{2} \\ \\ {(3 + 2 \sqrt{5} )}^{2} = {3}^{2} + 2(3)(2 \sqrt{5} ) + {(2 \sqrt{5} )}^{2} \\ \\ = 29 + 12 \sqrt{5}$

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